On the calendar, find a shift that doesn’t have anybody’s name in parenthesis; that shift is still available. Click a shift you’d like to work. Volunteers who can run the store themselves, sign up as a Supervisor. If you are still in training or prefer not to be in charge, sign up as a Volunteer.
Enter your name in the “Who” field, and click “Save.” You’ll get a “recurring event options” screen; Click Single, as shown below, then save. That’s it, you’re signed up for your new shift!
If you want to drop a shift, you can erase it from the signup, but also email email@example.com to prevent any confusion.