When they escape their teams pretending to have been captured by the opposing teams/vanishing without telling anyone and fleeing to Alola - they live in a tent for quite a while since they don't have a lot of money.
After meeting Bromley (my skull grunt OC) he initially is paid to help them around and blend into local customs but they end up becoming friends so Brom (as they call him for short) helps them out establishing their own life so they manage to get jobs in the area. Marc works as a farmer, Antony at the local marina/boat repair shops.
They all end up developing feelings for each other - Marc and Antony talk and figure it out between them but it's harder for Bromley who isn't part of anything established and doesn't quite have the same arena to brainstorm on. It ends up working out though, and they all stay in a relationship together.
Later on they manage to get a little house-wagon to live in so they all can live together rather than in the tent-solution.
Team Skull looks after Brom of course, since they're like an odd family. Plumeria would def give Marc and Antony the chance but also watch them closely to make sure they're not taking advantage of Bromley. Love you Plums!