Step 1. Go into the Employee's profile and click 'Employment' and click Availability
Step 2. Click +Add Availability
Step 3. Complete the Availability setup for the given employee.
The Start Date is required for entry of any availability while the End Date can be filled out or blanked out if it is an ongoing availability with no necessary end date. You can select to mark an Availability as 'All Day' or specify a time frame. Once this is complete, go ahead and select the frequency (Daily or Weekly) desired for the particular availability. If you choose Weekly you will be able to select the given days for the Availability rule you are creating.
Step 4. Once complete select save and you will be able to preview all the employee availabilities you have setup in the Availability section.