Okay. I have another question please.
How far can I go with changing professions, names or physical descriptions? In other words where are the serious distinctions? Parameters?
Having no expertise outside my one, first degree, attempted, memoir, I note one of my goals is to make sure what I write can be related to by the readers in their own lives. I wonder if your question isn't unrelated to how these five different people will react to how close your description of them fits as they think of themselves in their own lives?
Then again, maybe pose the question as to how they wish to be portrayed directly, then build your memoir around the permission you gain.
I'm not sure what I would do.
Ok, I got kind of tangled in words. I would ask the five if they felt theirs roles in the manuscript reflected who they actually are in real life. If it does, I'd say you were home free.