Leave Policy Progression is used if your company needs to change to a new leave policy effective for a specific date. You need to have both the new leave policy and the old leave policy to set this. To create a leave policy progression, please do as follows:
Go to the Leave module and click Modules.
Select Leave Policy Progression and click New.
Enter the Progression Date to effect the leave policy.
Select the Previous leave policy.
Select the New leave policy.
Select the Conversion method, eg, brought forward, and click Save.