To set up carry forward leaves for an existing leave policy:

1. On the left panel of your admin dashboard, head to Leaves > Policies.

2. Click Edit on the right of the existing leave policy.

3. On the left of the section, click Carry Forward.

4. Click Yes to enable carry forward leave settings.

5. Select your desired carry forward leave settings. 

6. Confirm by clicking Confirm.

Read more:

How to set up carry forward leaves by creating a new leave policy

How to set tiered expiry dates for carry forward leaves