Bulk flag operations
If you need to add or remove flags to a group of people, you can do that from the Reporting page
Navigate to your reporting page.
Use the report builder to build the list you want to affect
One your list is established, click the purple "Actons" button in the Results section
Click "Batch Update"
Under the "Field to update" dropdown select "Flag"
Under the "New Value" dropdown, select the flag you want to apply or remove from the list
And finally, under the "select Operation" dropdown, select if you want to apply a flag to the list or remove that flag from the list.