This How-to address access, change, and swap a worker slot that you have scheduled with another worker.
AiA Art Gallery uses a website named SignUp.com to keep track of our work schedule; allow artists to swap schedules; and to send out reminders of work activities. You can exchange (swap) a slot that you have scheduled with another worker. You can see how to do that here:
Once successfully changed, you will receive email confirmation notice of the change(s) as well as notices two days in advance of your changed work commitment.
After signing up for gallery worker slots, you can look at other How-to sections to assist in your understanding of tasks such as cancelling a work schedule slot if you are unable to swap work slots with another worker. If the date that you were scheduled was within two weeks of the day you cancel, please contact the scheduler if unable to work a slot.