If you find that you have uncovered shifts left in the Unassigned row or you would like to allow your employees to choose their own shifts, it's very easy to move them all to the Available shifts row. This will make them visible to your employees and will assist you in covering open shifts. Related: What is the difference between Unassigned and Available shifts?
To move all Unassigned shifts:
Go to the Week or Month view of the Shifts page and click the options button (3 dots) at the top right of the page. Select Make all unassigned shifts available and you will see all the unassigned shifts moved to available shifts.
To move one shift at a time:
Individual shifts can be moved by drag and drop. This applies to unassigned shifts as well as assigned shifts, so if an employee notifies you that they are not able to work a shift already assigned to them, you can move it easily and find coverage.
Please note that shifts for dates which have already passed, cannot be made available. Only future shifts can be made available.