Add Group By: Date and Project.

This will allow developers to check the number of hours posted per day during a pay period so they can verify they were paid the correct number of hours per pay period.

In the "Manage tab" you can group by date and project by clicking on "Group by this field" on the date field in the header. Also see here:

http://www.visionproject.se/ShowKBEx.do?id=492&supportCenter=8USa0ec8CyGSgfbfPTSV

Is this sufficient for you?