SOS: Exclude posts from Activity and other sites

I know this question has been asked and answered but for the life of me I can’t locate the result. I’m in the process of creating posts for the FAQ Support portion of a website and notice that every post appears on the front page. I don’t want this and wonder what method can I apply to keep this from happening? Is there a plugin or box that when checked will keep certain posts from appearing in the activity stream?

Any responses appreciated.