Working patterns are what you use to help set what hours employees should be working. These are important for if you create a time off policy based on working patterns, or if you have the Timesheets module, when you set up overtime.
Only employees with administrator access can follow the steps in these guides below.
Step 1 - Create a working pattern
How to create new working pattern and enter default set of working hours.
Step 2 - Assign employees to a working pattern
Once you have working patterns created, you can add employees to them.