Skill: Get a booster and run 2's in whatever playlist you wish to boost. Lone wolves boosting is retarded. I'd go for it at your own risk. Running games with the same group 5 times will no longer gain skill level (i.e Circle boosting like in Halo 2) Which brings us to EXP boosting. When exp boosting, you want to get no kills, medals, deaths, captures, etc. You will have one winning team and one losing team. The losing team must have a 50(if boosting EXP on 50s) or a rank the same as the highest. The way to do it with the least people would be dubs. 2 xboxs, 4 controllers and 4 accounts, and you can run it all day, all night. Good luck.
Its easier to play with a booster account + main I would just play with you in dubs from my booster except its expired and also don't got the mythic map pack 2 so im unable to play dubs