You can choose from a large selection of different leave types depending on the nature of the crew's leave.
Each leave type will impact a crew member's accrued leave balance differently, with variations in whether the crew member will accrued leave whilst on leave and whether leave will be deducted from the crew member when on leave. Variations in the rate of deduction will also apply.
An example of different leave types can be found below or a full list here.
You can update the list of leave options you can select from in the leave settings:
Click on settings, then leave and you will see the full list of leave types. You can filter by whether they are shown or hidden.
Use the checkbox beside the leave type to select the leave type(s). You will then see a pop up option to set these to hide or show.
You will then see the leave types set to show in the leave schedule page, along with the type of settings that leave has.
N.B For the longer leave types, hover over them and the full name will appear.