Go to the assignment that you want to change/update, click on the Edit button against the Shifts table.
Make the required changes in the date and time of the assignment and click Done.
If you want to reset the shifts you have plotted, you can use the Reset button to do it.
To reset it for a particular week only, go to the specific date on the calendar and click Reset. Then choose Reset This Week Only.
To reset all, click Reset All.
You will see a small dialog box confirming the changes and you can see the updated schedule as well.
The worker will receive an instant notification about the changes.