To deactivate a user in your account, go to the Team Settings page.
1. Find the user who you'd like to deactivate. Scroll through your user list, or type their name or email address in the search box.
2. Hover over their user.
3. Select the "Click to edit" button:
4. Click on the trash can icon to deactivate this user.
Once a user is deactivated, they will no longer be able to log into Lever.
If you'd like to deactivate a user, here are instructions on how to do that.