When someone is given an assignment, Timecounts considers that person 'Qualified' for the assignment. If you'd like to remove someone from an assignment, you will need to open the assignment, go to the Qualified section of the Pipeline tab, select the person, and click 'Unqualify' in the toolbar.
In the Unqualify window, you'll be asked to select a reason why you're removing the volunteer from the assignment. You can choose a reason from the dropdown, or select 'Custom' to add your own reason.
We're working on storing reasons in the profile card and activity record for each volunteer. As soon as this feature is released, all past reasons that you've logged will be visible and tracked.
While unqualifying, you can choose to send a personal email to the volunteer to notify them of this change.