Pay Category missing from the Timesheets

To be able to add a new Pay Category to a Timesheet a Work Type will need to be set up: 

1. Please go to Employees tab then click on Payroll Settings.
2. Under Pay Conditions, please select Work Types.
3. Click on Add at the top right.
4. Please create a Name for the Work Type.
5. Configure the work type to which employee they will be available.
6. Map the work type accordingly to a specific Pay category or Leave Category.
7. Click on Save.

Note:

Once you have created the Work Type navigate to the Employee's details and choose Work Types.

Ensure the applicable Work Types are selected and Save. 
You will then be able to add this Pay Category to a Timesheet.