Sure thing!
The rogue group as they currently stand is fairly new, though its members have mostly been around the clan territories for some time as loners or loose family groups. Some have kittypet or barn cat pasts. Prior to joining together, they had varying degrees of interaction with the clan territories. Each cat in the group has their own story.
They were brought together by Creek and Slate's father, basically saying that well if the clan cats working together makes them strong and gives them a better life, maybe it will work for them as well. The problem they ended up facing is they were living on the marginal territory on the outskirts of clan land, to avoid conflict. It wasn't able to support them all living together in one place; these cats typically led much more nomadic lives prior to this, sometimes leaving the land where clan territories are altogether and heading to the nearby town etc.
Then, when the father vanished one day, Creek took over. His leadership was different, based on strength and fear to control his underlings, and he had greater ambitions. Clan territory and its riches could be theirs... leading into the situation that unfolds in Dappledshade's Vision. Their current structure is still fairly loose, nothing like how a clan functions. Cats mostly just do their own thing until ordered otherwise, but they currently do live in a mock camp of sorts.