Hello,
We don't have a requirement to post in the forums. Even so, if you post or are active (responding) in a particular forum, it will receive a check in the completion checkbox. In a regular course- this shows you have completed the requirements to continue. In the Breakroom, the checkbox is an easy way to remember which forums you have been posting or responding in.

Remember that once you have taken one of our courses, you can remain active in the Breakroom for as long as you want and use it to network or help other students and even get help from students and instructors while studying for state exams.
As long as your user account remains active, you can even un-enroll yourself from the Breakroom and re-enroll later, when you have new questions, are hiring or are looking for a job.
Sandra King.
Tech Support