@startuml

autonumber

actor Nurse
activate Nurse
Nurse -> System: Logins in the system
activate System
return Asks in which vaccination center is the nurse working
deactivate System
Nurse -> System: Introduces required data
activate System
return Shows the nurse menu possibilities
deactivate System
Nurse -> System: Chooses the list the SNSUser in waiting list option
activate System
return Shows the pretended list
deactivate System
deactivate Nurse

@enduml