When you first logged into your account you entered some Positions and Employees. You can always add more Positions or change your Positions and set which Employees can work them.
To Add a New Position
Now in the Positions Grid set which Employees can work these new Positions: More>
EDIT Positions (Jobs) (to change the way the position label/name displays on all schedules)
DELETE Positions (Jobs) if you make a mistake and enter an unnecessary Position you want to completely remove.