Yes, Opfin supports Leave Encashment during the exit process of an employee. This would depend on the Time & Attendance configuration setup in the account. 

 

The below FnF form show the Leave Balance of the Employee (right side) and allows you to enter the # of leaves to be encashed during the FnF process.


Visit People > Click on an Employee Profile > Scroll down > Dismiss Employee will take you to this page.