I have a problem with this too. Some days I want to get so much done, and I then find myself sitting on the couch unable to get up and move. that is where i stay. then get pissed off that nothing was done. So i try to make an announcement, Ok Everyone listen up, Today we have to do this this and that, if you want to help out go to the left if not go to the right. If your on the right, go play or distract yourself but no interfering and if on the Left here is what you can do to help out today. It helps sometimes. Its all cooperation, and sometimes my system does not want to and we sit on the couch all day long.