There are four little “pop in” holes and two screws that hold it in place. I popped it out and then moved it to the side to access the screws. And pics for ya...
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .