It can happen that you posted a shift on Connect, but concluded that you don't need a flexworker anymore. Best thing to do is to cancel your offered shift, which you can do at any time if you haven't hired someone yet.
How to do is?
1. Login to Connect
2. Go to Shifts > Shift offers
3. Click on the shift you want to delete
4. Click on the button 'Delete' at the bottom of the shift detail view
You can delete a shift even if there are applicants. The application of the applicants will automatically be retracted once you delete your shift.