I think this would mean being a friend to both. Taking them both as lovers and getting involved sexually one on one, with them both and in a group situation when all 5 have their play nights. While I think it is a bit premature to have one or both of them move in with me... that could be considered down the road. I could help them both out financially some. Not sure how that works best when one has a good job and the other not so good.
The complaint I am hearing is that none of them get enough time spent with the primary male, so I would be a secondary to help out emotionally and sexually.
I understand this board is not really sexually oriented, but these girls apparently are not getting enough attention in that area either from the one male primary. I know this seems silly, but he claims he needs help keeping 3 of them happy.
But I would definitely be in the secondary role.