On Web:

Click on Menu > Libraries > Shift Templates > Schedule Templates tab

Click on > Add Schedule Template

Enter the name you want to give the schedule template

Click on > Confirm

Click on the add icon to add a predefined shift template to this schedule template

Click on > Choose Predefined Shift to select a predefined shift template from the drop-down

Tick the "All days" checkbox in case the selected shift is to be repeated on all days or tick the checkbox for the specific days on which you would like to have it repeated

Click on > Add Shift

Keep in mind: Multiple predefined shifts can be added on the same day of a schedule template, for example, an employee who works a morning and afternoon shift. However, these shifts have to be more than 15 minutes apart, or you will get an error trying to add them.