I once had a person from Kenya as a co-worker. One day we were talking about wives and he mentioned he had eight! As I stood there with my jaw on the floor he busted out laughing. I asked how he kept the peace. He said each of his wives had a separate house where that wife and her children lived. There was a main house where he lived with one of his wives. That wife and her children would live with him for a while and then move out as another of the wives moved in.
Such an arrangement might work with extended families except using tents.