diff --git a/models/128026.diagram b/models/128026.diagram
new file mode 100644
index 0000000..42a1d9b
--- /dev/null
+++ b/models/128026.diagram
@@ -0,0 +1,68 @@
+format 223
+
+classinstance 128026 class_ref 128044 // Klient
+  name ""   xyz 30 4.2 2000 life_line_z 2000
+classinstance 128154 class_ref 151340 // AutomatKontroler
+  name ""   xyz 258 3.2 2000 life_line_z 2000
+classinstance 128282 class_ref 128940 // Magazyn
+  name ""   xyz 526.6 3.2 2000 life_line_z 2000
+classinstance 128410 class_ref 129196 // ZewnetrznySystemObslugi
+  name ""   xyz 631.4 3.2 2000 life_line_z 2000
+classinstance 129818 class_ref 128300 // PracownikObslugi
+  name ""   xyz 934 10.2 2000 life_line_z 2000
+durationcanvas 128538 classinstance_ref 128026 // :Klient
+  xyzwh 44 105.4 2010 11 144
+  overlappingdurationcanvas 130330
+    xyzwh 50 210 2020 11 25
+  end
+end
+durationcanvas 128666 classinstance_ref 128154 // :AutomatKontroler
+  xyzwh 312 105 2010 11 230
+end
+durationcanvas 128922 classinstance_ref 128282 // :Magazyn
+  xyzwh 555 122.2 2010 11 82
+end
+durationcanvas 129306 classinstance_ref 128410 // :ZewnetrznySystemObslugi
+  xyzwh 715 320.8 2010 11 40
+end
+durationcanvas 129946 classinstance_ref 129818 // :PracownikObslugi
+  xyzwh 986 337 2010 11 25
+end
+msg 128794 synchronous
+  from durationcanvas_ref 128538
+  to durationcanvas_ref 128666
+  yz 106 2015 msg operation_ref 128044 // "wybierzNumerProduktu(numer:int) : void()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 64 84
+msg 129050 synchronous
+  from durationcanvas_ref 128666
+  to durationcanvas_ref 128922
+  yz 124 3010 msg operation_ref 129452 // "pobierzProdukt(in produktId : int)"
+  show_full_operations_definition yes show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 352 108
+msg 129178 return
+  from durationcanvas_ref 128922
+  to durationcanvas_ref 128666
+  yz 190 3010 explicitmsg "brakProduktu()"
+  stereotype "<<exception>>" xyz 399 203 3000
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 392 173
+msg 129434 synchronous
+  from durationcanvas_ref 128666
+  to durationcanvas_ref 129306
+  yz 321 3020 msg operation_ref 129580 // "zglosBrakProduktu(in produktId : int)"
+  show_full_operations_definition yes show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 414 305
+msg 129690 synchronous
+  from durationcanvas_ref 128666
+  to durationcanvas_ref 130330
+  yz 212 3010 explicitmsg "powiadomOBrakuProduktu()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 102 195
+msg 130074 synchronous
+  from durationcanvas_ref 129306
+  to durationcanvas_ref 129946
+  yz 340 3015 explicitmsg "zglosBrakProduktu(in produktId : int)"
+  show_full_operations_definition yes show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 751 320
+end
diff --git a/models/128154.diagram b/models/128154.diagram
new file mode 100644
index 0000000..e2be510
--- /dev/null
+++ b/models/128154.diagram
@@ -0,0 +1,69 @@
+format 223
+
+classinstance 128026 class_ref 128300 // PracownikObslugi
+  name ""   xyz 19 19 2000 life_line_z 2000
+classinstance 128154 class_ref 151340 // AutomatKontroler
+  name ""   xyz 277 12 2000 life_line_z 2000
+classinstance 128282 class_ref 128940 // Magazyn
+  name ""   xyz 558 11 2000 life_line_z 2000
+durationcanvas 128410 classinstance_ref 128026 // :PracownikObslugi
+  xyzwh 69 124 2010 11 343
+end
+durationcanvas 128538 classinstance_ref 128154 // :AutomatKontroler
+  xyzwh 330 123 2010 11 25
+end
+durationcanvas 128794 classinstance_ref 128282 // :Magazyn
+  xyzwh 587 203 2010 11 25
+end
+durationcanvas 129050 classinstance_ref 128154 // :AutomatKontroler
+  xyzwh 330 284 2010 11 111
+end
+durationcanvas 129306 classinstance_ref 128282 // :Magazyn
+  xyzwh 587 296 2010 11 82
+end
+durationcanvas 129818 classinstance_ref 128154 // :AutomatKontroler
+  xyzwh 330 450 2010 11 25
+end
+msg 128666 synchronous
+  from durationcanvas_ref 128410
+  to durationcanvas_ref 128538
+  yz 124 2015 msg operation_ref 129708 // "uruchomTrybKonfiguracji()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 130 108
+msg 128922 synchronous
+  from durationcanvas_ref 128410
+  to durationcanvas_ref 128794
+  yz 203 2015 explicitmsg "uzupelnijBraki()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 289 187
+msg 129178 synchronous
+  from durationcanvas_ref 128410
+  to durationcanvas_ref 129050
+  yz 284 2015 explicitmsg "aktualizujStanMagazynu()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 130 268
+msg 129434 synchronous
+  from durationcanvas_ref 129050
+  to durationcanvas_ref 129306
+  yz 298 2015 msg operation_ref 130092 // "aktualizujStanMagazynu(in produktId : int [0..1])"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 389 282
+msg 129562 return
+  from durationcanvas_ref 129306
+  to durationcanvas_ref 129050
+  yz 363 2015 explicitmsg "stanMagazynu()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 418 348
+msg 129690 return
+  from durationcanvas_ref 129050
+  to durationcanvas_ref 128410
+  yz 378 2015 explicitmsg "stanMagazynu()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 159 362
+msg 129946 synchronous
+  from durationcanvas_ref 128410
+  to durationcanvas_ref 129818
+  yz 456 2015 msg operation_ref 129836 // "uruchomTrybPracy()"
+  show_full_operations_definition default show_class_of_operation default drawing_language default show_context_mode default
+  label_xy 147 440
+end
diff --git a/models/154156.diagram b/models/154156.diagram
index 9c1c5ca..717caa3 100644
--- a/models/154156.diagram
+++ b/models/154156.diagram
@@ -47,15 +47,15 @@ end
 relationcanvas 128556 relation_ref 128556 // zawiera>
   from ref 128428 z 2007 label "zawiera>" italic max_width 255 xyz 1093 43 2007 to ref 128172
   no_role_a no_role_b
-  multiplicity_a_pos 964 68 3000 multiplicity_b_pos 1307 79 3000
+  multiplicity_a_pos 962 67 3000 multiplicity_b_pos 1313 79 3000
 end
 relationcanvas 128940 relation_ref 128684 // realizuje >
-  from ref 128172 z 3006 to point 840.6 86.4
-  line 129196 z 3006 to point 843 89.8
-  line 132012 z 3006 label "realizuje >" italic max_width 255 xyz 997 109 3006 to point 1190.6 179.8
+  from ref 128172 z 3006 to point 840 86
+  line 129196 z 3006 to point 843 89
+  line 132012 z 3006 label "realizuje >" italic max_width 255 xyz 997 109 3006 to point 1190 179
   line 132140 z 3006 to ref 128812
   no_role_a no_role_b
-  multiplicity_a_pos 1297 211 3000 multiplicity_b_pos 877 119 3000
+  multiplicity_a_pos 1299 210 3000 multiplicity_b_pos 875 117 3000
 end
 relationcanvas 129964 relation_ref 151212 // tworzy>
   from ref 128044 z 2001 label "tworzy>" italic max_width 255 xyz 501 45 2001 to ref 128172
@@ -63,15 +63,15 @@ relationcanvas 129964 relation_ref 151212 // tworzy>
   no_multiplicity_a no_multiplicity_b
 end
 relationcanvas 130092 relation_ref 151340 // <realizuje
-  from ref 128812 z 3006 label "<realizuje" italic max_width 255 xyz 1192 231 3006 to point 1297.2 223
-  line 131756 z 3006 to point 1208 259.8
+  from ref 128812 z 3006 label "<realizuje" italic max_width 255 xyz 1192 231 3006 to point 1297 223
+  line 131756 z 3006 to point 1208 259
   line 131884 z 3006 to ref 129708
   no_role_a no_role_b
   no_multiplicity_a no_multiplicity_b
 end
 relationcanvas 130220 relation_ref 151468 // realizuje>
-  from ref 128812 z 3006 to point 1417.2 263
-  line 132268 z 3006 label "realizuje>" italic max_width 255 xyz 1471.5 275 3006 to ref 129580
+  from ref 128812 z 3006 to point 1417 263
+  line 132268 z 3006 label "realizuje>" italic max_width 255 xyz 1471 275 3006 to ref 129580
   no_role_a no_role_b
   no_multiplicity_a no_multiplicity_b
 end
@@ -81,23 +81,23 @@ relationcanvas 130348 relation_ref 151596 // korzysta>
   no_multiplicity_a no_multiplicity_b
 end
 relationcanvas 130476 relation_ref 151724 // korzysta>
-  from ref 129580 z 2006 label "korzysta>" italic max_width 255 xyz 1593.5 385 2006 to ref 129324
+  from ref 129580 z 2006 label "korzysta>" italic max_width 255 xyz 1593 385 2006 to ref 129324
   no_role_a no_role_b
   no_multiplicity_a no_multiplicity_b
 end
 relationcanvas 130860 relation_ref 129196 // posiada>
   from ref 130732 z 2013 label "posiada>" italic max_width 255 xyz 1124 121 2013 to ref 128428
   no_role_a no_role_b
-  multiplicity_a_pos 1292 103 3000 multiplicity_b_pos 1046 174 3000
+  multiplicity_a_pos 1300 117 3000 multiplicity_b_pos 1102 176 3000
 end
 relationcanvas 130988 relation_ref 151980 // zawiera>
   decenter_end 481
-  from ref 128044 z 2013 label "zawiera>" italic max_width 255 xyz 605 143.5 2013 to ref 130732
+  from ref 128044 z 2013 label "zawiera>" italic max_width 255 xyz 605 143 2013 to ref 130732
   no_role_a no_role_b
   no_multiplicity_a no_multiplicity_b
 end
 relationcanvas 131372 relation_ref 152236 // <jest obslugiwany
-  from ref 128044 z 2001 label "<jest obslugiwany" italic max_width 255 xyz 258 199.5 2001 to ref 131116
+  from ref 128044 z 2001 label "<jest obslugiwany" italic max_width 255 xyz 258 199 2001 to ref 131116
   no_role_a no_role_b
   no_multiplicity_a no_multiplicity_b
 end
diff --git a/models/26.session b/models/26.session
new file mode 100644
index 0000000..4ce0ed2
--- /dev/null
+++ b/models/26.session
@@ -0,0 +1,17 @@
+window_sizes 958 991 239 713 809 128
+
+diagrams
+  classdiagram_ref 154156 // design-model
+    1075 575 100 A0 60 0
+  sequencediagram_ref 128026 // 2-1-brakProduktu
+    1075 575 80 Tabloid 0 0
+  active  sequencediagram_ref 128154 // 2-2-uzupelnienieBrakow
+    713 809 100 A4 0 0
+end
+show_stereotypes
+selected class_ref 128940 // Magazyn
+open
+  class_ref 128044 // Klient
+  classview_ref 134572 // design
+end
+end
diff --git a/models/models.prj b/models/models.prj
index 190c463..da1d3d3 100644
--- a/models/models.prj
+++ b/models/models.prj
@@ -1,7 +1,7 @@
 format 223
 "models"
-  revision 12
-  modified_by 17 "sarkow1"
+  revision 13
+  modified_by 26 "48731"
 
 
   
@@ -70,7 +70,7 @@ format 223
     end
 
     class 128044 "Klient"
-      visibility package 
+      visibility package stereotype "actor"
       cpp_decl ""
       java_decl ""
       php_decl ""
@@ -160,7 +160,7 @@ format 223
     end
 
     class 128300 "PracownikObslugi"
-      visibility package 
+      visibility package stereotype "actor"
       cpp_decl ""
       java_decl ""
       php_decl ""
@@ -1509,5 +1509,15 @@ format 223
       classdiagramsettings draw_all_relations no member_max_width 0 end
       size A0
     end
+
+    sequencediagram 128026 "2-1-brakProduktu"
+      sequencediagramsettings end
+      overlapping_bars size Tabloid
+    end
+
+    sequencediagram 128154 "2-2-uzupelnienieBrakow"
+      sequencediagramsettings end
+      overlapping_bars size A4
+    end
   end
 end