A business may invite you to a future shift they post. When they do, you will receive a text message like below:

Please note that an invite is NOT a guarantee of you getting a spot on the shift. A business usually sends out invites to a lot of workers for a limited number of spots on the shift, so it is first-come-first-serve.

If you click on the invite link and you're directed to the waitlist of the shift instead of being able to 'accept' the shift, it means the shift is full and you should NOT go to the shift. You will be turned away without pay if you do