Go to Payroll, Reports, Transactions and Pay Advices.
Go to the Leave tab, tick on Current leave transactions.
Tick on Default option at the left bottom of the screen.
If the Default option is ticked already, untick the checkbox and then tick back again so the system remembers the pay advice settings for you.
Note: If you click on Re-print Pay Advice this setting of Current leave transactions unticks automatically. In that case you will need to change the settings of pay advices after re-printing the pay advice and close the pay advice module, so the system remembers your setting correctly.