diff --git a/models/128013.diagram b/models/128013.diagram
new file mode 100644
index 0000000..d4aafc9
--- /dev/null
+++ b/models/128013.diagram
@@ -0,0 +1,66 @@
+format 223
+
+classinstancecanvas 128269 classinstance_ref 128013 // Zaopatrzeniowiec
+  xyz 12.6 16.6 2005 life_line_z 2000
+end
+classinstancecanvas 128397 classinstance_ref 128514 // KontrolerAutomatu
+  xyz 631.3 30.3 2005 life_line_z 2000
+end
+classinstancecanvas 128909 classinstance_ref 128141 // Ekran_dotykowy
+  xyz 322.8 28.7 2005 life_line_z 2000
+end
+classinstancecanvas 131725 classinstance_ref 128269 // Automat
+  xyz 920 25 2005 life_line_z 2000
+end
+durationcanvas 129421 classinstance_ref 128269 // Zaopatrzeniowiec:Zaopatrzeniowiec
+  xyzwh 124 117 2010 11 80
+end
+durationcanvas 129549 classinstance_ref 128909 // Ekran_dotykowy:Ekran_dotykowy
+  xyzwh 430 118 2010 11 40
+end
+durationcanvas 129805 classinstance_ref 128269 // Zaopatrzeniowiec:Zaopatrzeniowiec
+  xyzwh 124 219 2010 11 66
+end
+durationcanvas 129933 classinstance_ref 128909 // Ekran_dotykowy:Ekran_dotykowy
+  xyzwh 430 216 2010 11 112
+  overlappingdurationcanvas 131469
+    xyzwh 436 275 2020 11 35
+  end
+end
+durationcanvas 130189 classinstance_ref 128397 // KontrolerAutomatu:Automat
+  xyzwh 721 214 2010 11 96
+end
+durationcanvas 131853 classinstance_ref 131725 // Automat:Automat
+  xyzwh 976 251 2010 11 37
+end
+msg 129677 synchronous
+  from durationcanvas_ref 129421
+  to durationcanvas_ref 129549
+  yz 118 2015 explicitmsg "dodajProdukty()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 230 101
+msg 130061 synchronous
+  from durationcanvas_ref 129805
+  to durationcanvas_ref 129933
+  yz 220 2015 explicitmsg "logowanie(haslo: String)"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 203 203
+msg 130317 synchronous
+  from durationcanvas_ref 129933
+  to durationcanvas_ref 130189
+  yz 218 2015 explicitmsg "sprawdzHaslo(haslo: String)"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 485 201
+msg 131597 synchronous
+  from durationcanvas_ref 130189
+  to durationcanvas_ref 131469
+  yz 299 2025 explicitmsg "logowanie(status: Boolean)"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 492 282
+msg 131981 synchronous
+  from durationcanvas_ref 130189
+  to durationcanvas_ref 131853
+  yz 264 2015 explicitmsg "gotowoscOtrzymaniaTowarow()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 748 247
+end
diff --git a/models/128014.diagram b/models/128014.diagram
index 0ba42a1..18e8201 100644
--- a/models/128014.diagram
+++ b/models/128014.diagram
@@ -2,107 +2,107 @@ format 223
 
 classcanvas 128002 class_ref 128002 // Karta_platnicza
   classdiagramsettings member_max_width 0 end
-  xyz 958.97 1057.47 2000
+  xyz 958.37 1057.87 2000
 end
 classcanvas 128142 class_ref 128142 // Klient
   classdiagramsettings member_max_width 0 end
-  xyz 799.29 572.77 2000
+  xyz 799.49 572.57 2000
 end
 classcanvas 128270 class_ref 128270 // Produkt_gotowy
   classdiagramsettings member_max_width 0 end
-  xyz 1452.43 1536.92 2000
+  xyz 1452.43 1536.52 2000
 end
 classcanvas 128398 class_ref 128398 // Produky_do_przygotowania
   classdiagramsettings member_max_width 0 end
-  xyz 1712.76 1311.15 2000
+  xyz 1712.76 1311.75 2000
 end
 classcanvas 128514 class_ref 128514 // Kasetka
   classdiagramsettings member_max_width 0 end
-  xyz 416.9 449.96 2000
+  xyz 416.1 449.56 2000
 end
 classcanvas 128526 class_ref 128526 // Sprzedaz
   classdiagramsettings member_max_width 0 end
-  xyzwh 1193.54 569.56 2000 221 57
+  xyzwh 1193.94 569.16 2000 221 57
 end
 classcanvas 128654 class_ref 128654 // Terminal
   classdiagramsettings member_max_width 0 end
-  xyz 985.04 864.55 2000
+  xyz 985.84 864.55 2000
 end
 classcanvas 128770 class_ref 128770 // Produkt
   classdiagramsettings member_max_width 0 end
-  xyzwh 1455.85 1220.34 2000 146 125
+  xyzwh 1456.25 1220.94 2000 146 125
 end
 classcanvas 128898 class_ref 128898 // Dzial_serwisowy
   classdiagramsettings member_max_width 0 end
-  xyz 1440.4 185.04 2000
+  xyz 1440.6 185.84 2000
 end
 classcanvas 129026 class_ref 129026 // Monety_klienta
   classdiagramsettings member_max_width 0 end
-  xyz 819.79 773.95 2000
+  xyz 819.19 773.75 2000
 end
 classcanvas 129038 class_ref 129038 // Zaopatrzeniowiec
   classdiagramsettings member_max_width 0 end
-  xyz 432.04 1257.23 2000
+  xyz 427.04 1242.63 2000
 end
 classcanvas 129166 class_ref 129166 // Serwisant
   classdiagramsettings member_max_width 0 end
-  xyz 1462.94 317.9 2000
+  xyz 1462.34 317.3 2000
 end
 classcanvas 129282 class_ref 129282 // Alarm
   classdiagramsettings member_max_width 0 end
-  xyz 1891.79 608.66 2000
+  xyz 1891.59 608.86 2000
 end
 classcanvas 129294 class_ref 129294 // Dzial_zaopatrzeniowy
   classdiagramsettings member_max_width 0 end
-  xyz 786.95 1173.22 2000
+  xyz 786.35 1173.42 2000
 end
 classcanvas 129410 class_ref 129410 // Proba_wlamanie
   classdiagramsettings member_max_width 0 end
-  xyz 1580.62 786.85 2000
+  xyz 1580.02 786.45 2000
 end
 classcanvas 129550 class_ref 129550 // Saldo_klienta
   classdiagramsettings member_max_width 0 end
-  xyz 678.36 905.5 2005
+  xyz 678.16 905.3 2005
 end
 classcanvas 129666 class_ref 129666 // Awaria
   classdiagramsettings member_max_width 0 end
-  xyz 1816.39 454.84 2000
+  xyz 1816.19 454.44 2000
 end
 classcanvas 129678 class_ref 129678 // Raport_statu_magazynowego
   classdiagramsettings member_max_width 0 end
-  xyz 1157.3 1169.06 2000
+  xyz 1157.1 1169.66 2000
 end
 classcanvas 130050 class_ref 130050 // Procedura_przygotowania_produktu
   classdiagramsettings member_max_width 0 end
-  xyz 2041.92 1306.95 2000
+  xyz 2041.92 1306.15 2000
 end
 classcanvas 130178 class_ref 136578 // Raport_o_awarii
   classdiagramsettings member_max_width 0 end
-  xyz 1727.98 179.71 2000
+  xyz 1727.98 179.31 2000
 end
 classcanvas 130562 class_ref 136962 // Raport_sprzedazy
   classdiagramsettings member_max_width 0 end
-  xyz 1056.04 294.24 2000
+  xyz 1056.64 294.84 2000
 end
 classcanvas 130690 class_ref 137090 // Czujnik_wlamaniowy
   classdiagramsettings member_max_width 0 end
-  xyz 1563.89 611.78 2000
+  xyz 1563.69 611.38 2000
 end
 classcanvas 131586 class_ref 144002 // Platnosc
   classdiagramsettings member_max_width 0 end
-  xyz 976.38 659.02 2000
+  xyz 976.98 659.62 2000
 end
 classcanvas 135298 class_ref 128014 // Automat
   classdiagramsettings member_max_width 0 end
-  xyzwh 1417.92 441.38 2000 175 77
+  xyzwh 1417.12 441.58 2000 175 77
 end
 classcanvas 139394 class_ref 144130 // Gotowka_automatu
   classdiagramsettings member_max_width 0 end
-  xyz 640.98 456.8 2000
+  xyz 640.38 456 2000
 end
 classcanvas 140290 class_ref 144258 // Blad_wprowadzania_gotowki
   classdiagramsettings member_max_width 0 end
-  xyz 556.74 1085.75 2000
+  xyz 556.14 1085.55 2000
 end
 classcanvas 148354 class_ref 129422 // Zwrot_monet
   classdiagramsettings member_max_width 0 end
@@ -110,7 +110,7 @@ classcanvas 148354 class_ref 129422 // Zwrot_monet
 end
 classcanvas 149378 class_ref 150786 // Nominal
   classdiagramsettings member_max_width 0 end
-  xyz 806.08 371.42 2000
+  xyz 806.88 371.62 2000
 end
 relationcanvas 132866 relation_ref 129026 // Wplacanie
   decenter_begin 349
@@ -161,7 +161,7 @@ relationcanvas 136322 relation_ref 131330 // Dokonuje
   multiplicity_a_pos 957 683 3000 multiplicity_b_pos 859 632 3000
 end
 relationcanvas 136450 relation_ref 131458 // Uczestniczy>
-  from ref 128526 z 2001 label "Uczestniczy>" italic max_width 255 xyz 976 579.5 2001 to ref 128142
+  from ref 128526 z 2001 label "Uczestniczy>" italic max_width 255 xyz 976 579 2001 to ref 128142
   no_role_a no_role_b
   multiplicity_a_pos 859 617 3000 multiplicity_b_pos 1174 607 3000
 end
@@ -190,9 +190,9 @@ relationcanvas 138626 relation_ref 132866 // Jest
   multiplicity_a_pos 1484 1511 3000 multiplicity_b_pos 1500 1352 3000
 end
 relationcanvas 138754 relation_ref 132994 // Dodaje
-  from ref 128770 z 2001 label "Dodaje" italic max_width 255 xyz 984 1266 2001 to ref 129038
+  from ref 128770 z 2001 label "Dodaje" italic max_width 255 xyz 980.5 1267 2001 to ref 129038
   no_role_a no_role_b
-  multiplicity_a_pos 584 1293 3000 multiplicity_b_pos 1416 1291 3000
+  multiplicity_a_pos 580 1297 3000 multiplicity_b_pos 1415 1290 3000
 end
 relationcanvas 138882 relation_ref 133122 // Ma
   decenter_begin 483
@@ -219,8 +219,8 @@ relationcanvas 140930 relation_ref 134274 // Ma
 end
 relationcanvas 141186 relation_ref 134402 // <Wywoluje
   decenter_end 558
-  from ref 130178 z 2001 to point 1790 396
-  line 149122 z 2001 label "<Wywoluje" italic max_width 255 xyz 1796 377 2001 to point 1870 397
+  from ref 130178 z 2001 to point 1790.6 396.4
+  line 149122 z 2001 label "<Wywoluje" italic max_width 255 xyz 1796 377 2001 to point 1870.6 397.2
   line 148994 z 2001 to ref 129666
   no_role_a no_role_b
   multiplicity_a_pos 1848 430 3000 multiplicity_b_pos 1766 242 3000
@@ -268,15 +268,15 @@ relationcanvas 143362 relation_ref 135554 // Dotyczy
 end
 relationcanvas 143618 relation_ref 135682 // <Wysyla
   decenter_end 52
-  from ref 129038 z 2001 label "<Wysyla" italic max_width 255 xyz 649 1199 2001 to ref 129294
+  from ref 129038 z 2001 label "<Wysyla" italic max_width 255 xyz 644.5 1200 2001 to ref 129294
   no_role_a no_role_b
-  multiplicity_a_pos 759 1179 3000 multiplicity_b_pos 584 1270 3000
+  multiplicity_a_pos 764 1220 3000 multiplicity_b_pos 580 1274 3000
 end
 relationcanvas 143746 relation_ref 135810 // Oproznia^
   decenter_end 495
-  from ref 128514 z 2001 label "Oproznia^" italic max_width 255 xyz 463 868 2001 to ref 129038
+  from ref 128514 z 2001 label "Oproznia^" italic max_width 255 xyz 459.5 862 2001 to ref 129038
   no_role_a no_role_b
-  multiplicity_a_pos 476 1233 3000 multiplicity_b_pos 471 533 3000
+  multiplicity_a_pos 469 1217 3000 multiplicity_b_pos 469 534 3000
 end
 relationcanvas 145282 relation_ref 136066 // Generuje
   decenter_end 331
@@ -291,9 +291,9 @@ relationcanvas 146562 relation_ref 136194 // Aktywuje
 end
 relationcanvas 147074 relation_ref 136450 // Otrzymuje
   decenter_begin 685
-  from ref 130562 z 2001 label "Otrzymuje" italic max_width 255 xyz 332 867 2001 to point 373 345
-  line 147202 z 2001 to point 369 1351
-  line 147458 z 2001 to point 861 1355
+  from ref 130562 z 2001 label "Otrzymuje" italic max_width 255 xyz 332 867 2001 to point 373 345.6
+  line 147202 z 2001 to point 369.8 1351.4
+  line 147458 z 2001 to point 861.4 1355.6
   line 147330 z 2001 to ref 129294
   no_role_a no_role_b
   multiplicity_a_pos 843 1224 3000 multiplicity_b_pos 1025 354 3000
@@ -318,8 +318,8 @@ relationcanvas 150274 relation_ref 156930 // Dotyczy
   decenter_begin 136
   decenter_end 800
   from ref 130562 z 2001 label "Dotyczy" italic max_width 255 xyz 243 867 2001 to point 273 308
-  line 150402 z 2001 to point 270 1419
-  line 150530 z 2001 to point 859 1420
+  line 150402 z 2001 to point 270.6 1419.8
+  line 150530 z 2001 to point 859.8 1420.6
   line 151170 z 2001 to ref 128770
   no_role_a no_role_b
   multiplicity_a_pos 1416 1327 3000 multiplicity_b_pos 1011 313 3000
diff --git a/models/128141.diagram b/models/128141.diagram
new file mode 100644
index 0000000..4f0f84b
--- /dev/null
+++ b/models/128141.diagram
@@ -0,0 +1,66 @@
+format 223
+
+classinstancecanvas 128013 classinstance_ref 128013 // Zaopatrzeniowiec
+  xyz 19 15 2005 life_line_z 2000
+end
+classinstancecanvas 128141 classinstance_ref 128269 // Automat
+  xyz 356 29 2005 life_line_z 2000
+end
+classinstancecanvas 128269 classinstance_ref 128514 // KontrolerAutomatu
+  xyz 580 28 2005 life_line_z 2000
+end
+classinstancecanvas 129421 classinstance_ref 128397 // Dzial_zaopatrzeniowy
+  xyz 829 28 2010 life_line_z 2000
+end
+durationcanvas 128397 classinstance_ref 128013 // Zaopatrzeniowiec:Zaopatrzeniowiec
+  xyzwh 131 109 2010 11 91
+end
+durationcanvas 128525 classinstance_ref 128141 // Automat:Automat
+  xyzwh 412 109 2010 11 59
+end
+durationcanvas 128781 classinstance_ref 128013 // Zaopatrzeniowiec:Zaopatrzeniowiec
+  xyzwh 131 213 2010 11 88
+end
+durationcanvas 128909 classinstance_ref 128141 // Automat:Automat
+  xyzwh 412 214 2010 11 106
+  overlappingdurationcanvas 129805
+    xyzwh 418 289 2020 11 25
+  end
+end
+durationcanvas 129165 classinstance_ref 128269 // KontrolerAutomatu:Automat
+  xyzwh 670 232 2010 11 76
+end
+durationcanvas 129549 classinstance_ref 129421 // Dzial_zaopatrzeniowy:Dzial_zaopatrzeniowy
+  xyzwh 974 246 2010 11 49
+end
+msg 128653 synchronous
+  from durationcanvas_ref 128397
+  to durationcanvas_ref 128525
+  yz 109 2015 explicitmsg "dodajProdukty(produkt: Produkt)"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 188 92
+msg 129037 synchronous
+  from durationcanvas_ref 128781
+  to durationcanvas_ref 128909
+  yz 214 2015 explicitmsg "uzupelnionoTowar()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 228 197
+msg 129293 synchronous
+  from durationcanvas_ref 128909
+  to durationcanvas_ref 129165
+  yz 233 2015 explicitmsg "sprawdzProdukty()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 508 216
+msg 129677 synchronous
+  from durationcanvas_ref 129165
+  to durationcanvas_ref 129549
+  yz 266 2020 explicitmsg "wyslijRaport(raport: Raport)"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 738 249
+msg 129933 synchronous
+  from durationcanvas_ref 129165
+  to durationcanvas_ref 129805
+  yz 289 2025 explicitmsg "gotowoscDoZamkniecia()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 466 272
+end
diff --git a/models/128269.diagram b/models/128269.diagram
new file mode 100644
index 0000000..0816b4c
--- /dev/null
+++ b/models/128269.diagram
@@ -0,0 +1,42 @@
+format 223
+
+classinstancecanvas 128013 classinstance_ref 128013 // Zaopatrzeniowiec
+  xyz 18 16 2005 life_line_z 2000
+end
+classinstancecanvas 128141 classinstance_ref 128269 // Automat
+  xyz 322 28 2005 life_line_z 2000
+end
+classinstancecanvas 129037 classinstance_ref 128514 // KontrolerAutomatu
+  xyz 536 27 2005 life_line_z 2000
+end
+durationcanvas 128269 classinstance_ref 128013 // Zaopatrzeniowiec:Zaopatrzeniowiec
+  xyzwh 130 113 2010 11 76
+end
+durationcanvas 128397 classinstance_ref 128141 // Automat:Automat
+  xyzwh 378 118 2010 11 147
+  overlappingdurationcanvas 129421
+    xyzwh 384 213 2020 11 42
+  end
+end
+durationcanvas 129165 classinstance_ref 129037 // KontrolerAutomatu:Automat
+  xyzwh 626 148 2010 11 100
+end
+msg 128525 synchronous
+  from durationcanvas_ref 128269
+  to durationcanvas_ref 128397
+  yz 118 2015 explicitmsg "zamknijAutomat()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 203 101
+msg 129293 synchronous
+  from durationcanvas_ref 128397
+  to durationcanvas_ref 129165
+  yz 153 2015 explicitmsg "poprawnoscZamkniecia()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 423 136
+msg 129549 synchronous
+  from durationcanvas_ref 129165
+  to durationcanvas_ref 129421
+  yz 231 2025 explicitmsg "gotowoscNaZamowienie()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 426 214
+end
diff --git a/models/13.session b/models/13.session
new file mode 100644
index 0000000..aeb200d
--- /dev/null
+++ b/models/13.session
@@ -0,0 +1,12 @@
+window_sizes 1920 1017 278 1637 860 104
+
+diagrams
+  active  classdiagram_ref 128014 // domain-model
+    1624 1177 90 A2 0 0
+end
+show_stereotypes
+selected classdiagram_ref 128014 // domain-model
+open
+  classview_ref 128014 // domain
+end
+end
diff --git a/models/134658_13.d b/models/134658_13.d
new file mode 100644
index 0000000..d4477d8
--- /dev/null
+++ b/models/134658_13.d
@@ -0,0 +1,117 @@
+format 223
+
+classinstancecanvas 128130 classinstance_ref 128514 // KontrolerAutomatu
+  xyz 107 26 2010 life_line_z 2000
+end
+classinstancecanvas 128258 classinstance_ref 128642 // 
+  xyz 450 29 2015 life_line_z 2000
+end
+classinstancecanvas 132226 classinstance_ref 128770 // 
+  xyz 811 27 2000 life_line_z 2000
+end
+classinstance 133890 class_ref 128142 // Klient
+  name ""   xyz 8 15 2000 life_line_z 2000
+classinstancecanvas 134146 classinstance_ref 135682 // 
+  xyz 647 29 2020 life_line_z 2000
+end
+durationcanvas 128770 classinstance_ref 128130 // KontrolerAutomatu:Automat
+  xyzwh 197 146 2010 11 158
+  overlappingdurationcanvas 129538
+    xyzwh 203 257 2020 11 27
+  end
+  overlappingdurationcanvas 134914
+    xyzwh 203 150 2020 11 25
+  end
+end
+durationcanvas 129026 classinstance_ref 128258 // :ManagerTransakcji
+  xyzwh 514 191 2010 11 329
+end
+durationcanvas 132354 classinstance_ref 132226 // :ModulPlatnosciGotowkowej
+  xyzwh 902 222 2010 11 260
+  overlappingdurationcanvas 135170
+    xyzwh 908 250 2020 11 26
+  end
+  overlappingdurationcanvas 136706
+    xyzwh 908 450 2020 11 26
+  end
+end
+durationcanvas 134274 classinstance_ref 134146 // :Sprzedaz
+  xyzwh 681 225 2010 11 315
+  overlappingdurationcanvas 135810
+    xyzwh 687 498 2020 11 26
+  end
+  overlappingdurationcanvas 136450
+    xyzwh 687 406 2020 11 25
+  end
+end
+durationcanvas 134786 classinstance_ref 133890 // :Klient
+  xyzwh 24 149 2010 11 27
+end
+msg 129154 synchronous
+  from durationcanvas_ref 128770
+  to durationcanvas_ref 129026
+  yz 204 2015 explicitmsg "rozpocznijTransakcje()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  args "idProdukt:String"
+  label_xy 249 187
+msg 129666 synchronous
+  from durationcanvas_ref 129026
+  to durationcanvas_ref 129538
+  yz 272 2025 explicitmsg "wyswietlKwote()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  args "kwota:Kwota"
+  label_xy 260 252
+msg 134402 synchronous
+  from durationcanvas_ref 129026
+  to durationcanvas_ref 134274
+  yz 230 3005 explicitmsg "create()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  args "status:State, idProduktu:String, kwota:Kwota"
+  label_xy 547 212
+msg 135042 synchronous
+  from durationcanvas_ref 134786
+  to durationcanvas_ref 134914
+  yz 153 2025 explicitmsg "wybranyProdukt()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  args "numerProduktu:Int"
+  label_xy 26 129
+msg 135298 synchronous
+  from durationcanvas_ref 134274
+  to durationcanvas_ref 135170
+  yz 264 2025 explicitmsg "aktywuj()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 832 247
+msg 135426 return
+  from durationcanvas_ref 132354
+  to durationcanvas_ref 134274
+  yz 336 2015 explicitmsg "kwota:Kwota"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 818 319
+msg 135938 synchronous
+  from durationcanvas_ref 129026
+  to durationcanvas_ref 135810
+  yz 498 2025 explicitmsg "end()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  args "status:State"
+  label_xy 580 481
+msg 136066 return
+  from durationcanvas_ref 134274
+  to durationcanvas_ref 129026
+  yz 354 2015 explicitmsg "kwota:Kwota"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 592 337
+msg 136578 synchronous
+  from durationcanvas_ref 129026
+  to durationcanvas_ref 136450
+  yz 413 2025 explicitmsg "reszta()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  args "kwota:Kwota"
+  label_xy 546 396
+msg 136834 synchronous
+  from durationcanvas_ref 134274
+  to durationcanvas_ref 136706
+  yz 450 2025 explicitmsg "zwrocReszte()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  args "kwota:Kwota"
+  label_xy 772 433
+end
diff --git a/models/models.prj b/models/models.prj
index d3adf12..459f00e 100644
--- a/models/models.prj
+++ b/models/models.prj
@@ -416,7 +416,7 @@ format 223
     end
 
     class 129038 "Zaopatrzeniowiec"
-      visibility package 
+      visibility package stereotype "actor"
       cpp_decl ""
       java_decl ""
       php_decl ""
@@ -1770,5 +1770,53 @@ format 223
       relations
         end
     end
+
+    sequencediagram 128013 "7-1-opcjaDodajProdukty"
+      sequencediagramsettings end
+      overlapping_bars size A3
+    end
+
+    classinstance 128013 "Zaopatrzeniowiec"
+      stereotype "actor"
+      type class_ref 129038 // Zaopatrzeniowiec
+      attributes
+        end
+      relations
+        end
+    end
+
+    classinstance 128141 "Ekran_dotykowy"
+      type class_ref 128130 // Ekran_dotykowy
+      attributes
+        end
+      relations
+        end
+    end
+
+    classinstance 128269 "Automat"
+      type class_ref 128014 // Automat
+      attributes
+        end
+      relations
+        end
+    end
+
+    sequencediagram 128141 "7-2-dodanieProduktow"
+      sequencediagramsettings end
+      overlapping_bars size A3
+    end
+
+    classinstance 128397 "Dzial_zaopatrzeniowy"
+      type class_ref 129294 // Dzial_zaopatrzeniowy
+      attributes
+        end
+      relations
+        end
+    end
+
+    sequencediagram 128269 "7-3-zamkniecie"
+      sequencediagramsettings end
+      overlapping_bars size A3
+    end
   end
 end
diff --git a/system-events.md b/system-events.md
index 2605541..c3c9cda 100644
--- a/system-events.md
+++ b/system-events.md
@@ -17,10 +17,9 @@ Use case 4: Płatność kartą
  Use case 7: Dodanie towaru do automatu
 -----------------
 
- 1. wybranie opcji "dodaj produkty" przez zaopatrzeniowca
- 2. wprowadzenie hasła
- 3. wybranie opcji "uzypełniono towar" przez zaopatrzeniowca
- 4. zamknięcie automatu przez zaopatrzeniowca
+ 1. wybranie opcji "dodaj produkty" i podanie hasła przez zaopatrzeniowca
+ 2. dodanie produktów i wybranie opcji "uzypełniono towar" przez zaopatrzeniowca
+ 3. zamknięcie automatu przez zaopatrzeniowca
 
  Use case 8: Naprawa automatu w przypadku awarii systemu
 -----------------