Can a guardian dictate which group home a consumer chooses to stay in?

I am a community support worker, working with a consumer who has a criminal history. He is at least a bit mentally challenged. I'm not sure, but it seems that he could be a victim of the system. In other words, they act like they (his group home staff in particular) want him to be independent, but they talk to him like he's worthless. He has a habit of changing group homes ---- quite often! Since his last "episode" (he tore some things up around the home to get his way) his guardian told him that he is not moving again. Is that his guardian's right?

If he's under 18, yes. If he's over 18, but considered a vulnerable adult, yes.