...
more than 8 hours is always 8 hours.
Organization Structure Settings
Go to Organization Structure > Vessel Properties > Payroll > General:
...
In similar way persons are added to corresponding On-signing or Off-signing tabs in Crew Change module, if a user update dates of existing activities and there are itineraries for these dates
Ports Module Settings
Open Ports module:
...
In Modules > Ports you will find a list of different ports throughout the world.
...