AF Points in Group Shots

I am using the 5Dm3. I don't shoot many group shots, 3 or more people and I am having trouble with keeping all the faces in focus.  What is the best selection with the autofocus points & camera settings to get everyone in focus? This question is directed towards indoor and outdoor shots.

I shoot with various lenses, 24-70Lii, 70-200Lii,  50 1.4, 85 1.8 & 85 2.0 L

Thank you in advance for your suggestions.