To remove an official from the system, you need to first remove them out of the module itself. Navigate to Officials by Position.
Find the Official and hover over their name. Use the Trash can on the far right. TIP: You cannot do this if you have them assigned to anything.
Once they are removed from the module itself, you can remove them as a User from the website. Navigate to Admin - Manage Users.
Find the User and then hover and delete with the trash can.