For adding a half day leave for any type of Leave Type, please follow the below steps:
1. Login with your super admin credentials.
2. Navigate to settings (top right corner)
3. Click on "Leave Tracker"
4. Click on "Configuration" and then click on "Leave Policy"
5. Click on Casual Leave (example)
6. Click on the "Restriction" option and then scroll down and click on the "Half day" option to enable the half-day option under Allowed durations for this leave policy for the leave type. Click on "Save" to save the settings.
You can also enable other available options e.g. "Quarter day" or "Hourly"

Note: The same settings are applied to any of the Leave Types for enabling the half-day or other available options.