There are a few options for deactivating user accounts on your site. You can deactivate a user's account individually or you can bulk deactivate multiple users with the User Filter.
Deactivate an Individual Account
Go to Volunteerism > Users.
Select the user.
Scroll to the bottom until you see Deactivate User and click the red Deactivate User button.
When you click it, a warning pops up to confirm that you want to deactivate the user's account. Click Yes to continue or No to cancel.
Volunteers can anonymize their accounts—remove all of their personal information from your site— when they opt to deactivate. If you need to deactivate and anonymize an account, you must first assume that user's identity.
Deactivate Accounts in Bulk
Go to Volunteerism > Users.
Click the User Filter.
Apply filters to narrow the list to the user accounts you wish to deactivate.
If you don't apply filters first, then when you select to deactivate users, it will deactivate all of the accounts listed.
Use the Select an Action dropdown and click Deactivate Users.
Click Deactivate Current Users.