Creating or editing an absence in All Hours is pretty straight forward.
In this case we want to change the existing Sick leave absence so that it can be used for a few hours each day instead of taking the whole day and it can only be inserted by Administrators and Managers.
Go to Settings >> Event definitions >> Absences:
2. Edit the existing Sick leave absence:
The Sick leave absence is now only available to administrator level users and can be inserted for an entire day or just a few hours.
This absence is already configured to mark time with the Sick leave category. A counter also exists that counts this time so that it can then be displayed on reports.
If you would like to learn how to setup a new Category and a new Counter, please see these two examples: