Positions are not needed to create a rota but they can be useful for oversight and scheduling and filtering by different groups. For example a restaurant might have the following positions Bartender, Chef, Waitress, Cleaner.
Select 'Positions' from the main left hand menu, press the 'Add New' button in the top right, and then enter a position name. Click on the 'Locations' tab and click the drop down menu to select the location it corresponds to. Press the 'Green Plus' to tag it to this location. e.g Chef to Kitchen, Bartender to Bar.
Press 'Save' once you are done.