How do I view leave history of all the employees?

Click on Leave History under Reporting section and the following page will appear.

Under Search Criteria section, you can select the period by clicking on the Leave Date (From), Leave Date (To) (all box in red as shown in the image below). You can also select the Status, Department, Staff Name/ID, Leave Type and Reference (all box in green as shown in the image below). After entering the details of the search, click on the Search button (box in black as shown in the image below).

After clicking on the Search button, the following table (box in red as shown in the image below) will appear. It displays all the leave history that matched with the selected conditions in the Search Criteria section. To view the details of a particular leave history, you can click on the reference number (box in green as shown in the image below) under the Ref No. column.