Here's a video that covers how to get started building schedules.
To create a shift, click on a cell in the calendar, or click on the green New button and then click the Shift option. You will see a popup like the one below.
Update the fields and submit the form to save the shift.
Editing and Deleting Shifts
To edit a shift, click on it. Update the fields and submit the form.
To delete a shift, click on the Delete link at the bottom of the popup form.