By default, Paymo comes with a number of pre-set leave types:
Maternity
Military leave
Sick leave
Sick leave
You can, however, customize your own leave type by clicking on your profile picture (bottom left corner) → Company Settings → HR Settings → Leave Type.
Once you click on the Add Leave Type button, a pop-up will allow you to set up your own leave type and choose whether it is paid or not.
NOTE: Non-paid leave days don't count towards the user's booked legal leave widget.