1. Click on "My Leaves"

2. Click on "Apply for leave"

3.Select the type of leave 

4. Make sure you keep the same dates in "From Date" and "To Date" . After selecting the same dates, a box with "Half Day" caption will show up. Tick in the box, put reason and click on save.

5. If the box of "Half day" does not show up then click on below link which will show you How to enable/disable Half Day Leaves Box