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Primary Actor: Crewmember
Stakeholders & Interests: 

Brief Description: A crewmember wants to update a an existing tab.

Preconditions: A crewmember has logged in into the web application and the crewmember needs to have a tab
Postconditions: The crewmember can see its updated tab
Main success scenario (basic flow): 
Actor ActionSystem Responsibility

1. The crewmember wants to update a tab


3. The crewmember supplies system with a tab name.

4. The crewmember confirms the given input.



2. System asks for a new tab name



5. System validates if supplied tab name is correct.

6. System updates the tab name.

Extensions (alternative flow):




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Primary Actor: Crewmember
Stakeholders & Interests: 

Brief Description: A crewmember wants to update a delete an existing tab.

Preconditions: A crewmember has logged in into the web application and the crewmember needs to have a tab
Postconditions: The crewmember has deleted its tab.
Main success scenario (basic flow): 
Actor ActionSystem Responsibility

1. The crewmember wants to delete a tab


3. The crewmember confirms deletion



2. System asks for a confirmation

4. System deletes tab.

Extensions (alternative flow):




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