Your manager may create some shifts in the schedule as Open shifts depending on their business needs. An open shift is one which doesn't have a person assigned to it when it's created. You can cover and request these shifts if you have the correct role and/or skills.
You can see upcoming Open shifts that you can cover in the Open shifts widget on your Overview screen:
Tap a Shift to see its full details, or tap See all to get a calendar overview of all Open shifts that you can cover. Once you've selected a shift you will see the Request shift button:
Your request will change to pending, to cancel your request simply tap the Cancel button:
Once you request a shift, it’s up to your manager to approve the request. When your request is approved your manager will have the option to notify you via direct message. Otherwise your calendar will be updated in real-time as any changes are made.