With adult does, it's VERY hard to do. I had two (mother and daughter) who lived together for 3 months, then I separated them because the SR doe was bred again...the daughter lived right next to Mama...but when I tried to put them back together, Mama tried to kill the younger. :shrug:
Juniors, seem just fine with combining, and then they form a "unit" of bonded females. I just put 3 unrelated 3 and 4 month old does into a colony and they just sniffed each other and started to play. They're grooming each other, and just generally starting to be pals.
I've found with my groups, that it's easy to put a DOE in with the buck and leave her there, tho. They seem to get along just fine. After the first few hours of the buck being only interested in procreation, he settles down and starts being friendly. Then the grooming and bonding starts. I take my Angora buck to the colony does and just plop him in with them. They all accept him and end up treating him like the little Sultan that he is
I'd start by putting my juniors in with each other (does only) from your breedings, and that can be the start of the colony. Or just moving Mom and her litter into a colony, and as they grow, just remove the bucks. I'm working on an experiment with my bucks...if they grow up together, and are placed in a pen in another ROOM from the does, they seem to get along quite well. It's when they can see or smell the females that they start fighting. So far, it's working. (it's how I keep my poultry..roos in a BIG pen down on the far end of a field. No problems at all other than the normal pecking order. It's only when a female is moved in nearby that the fighting starts)