Another easy achievement.
This can be done on the second heist The Prision Break since the first heist The Fleeca Job is two players. Basically you just need to split the money for the second heist equally between 4 people.
Also this achievement requires you to be the Heist leader so take it in turns hosting a Heist. The heist leader gets to decide who gets what, once you've done all of the prep missions.