Check out these two articles on "wingmanning it"
 

I wrote the below two articles. I'm not hiding that fact. I'm posting the links here because I think they can help a good number of you. I'd also be keen to hear your feedback. If you think they're terrible and that I'm the worst writer you've come across, that's cool too.

This first article is on approaching 2-on-2 with a wingman. I also talk a little toward the end about 2-on-3 or 2-on-4.

mikemehlman.net/2017/10/28/approaching-with-a-wingman-approaching-duos

This second article is approaching 1-on-2 or 1-on-3.

mikemehlman.net/2017/10/28/approaching-pairs-groups-solo-i-e-1-on-2-1-on-3-etc

As I said, if you think I'm a terrible writer let me know, but I put good time into those articles.