Due to the unique nature of the Crimson Crane Clan, and how individually each one of them was strong in their own space as middle-stage warriors, often the group split up and only gathered when the request was made by Alba.
In the group, Alba was the only one able to make this request; it was part of the rules of the clan in a way. Even a clan like theirs had to have some type of structure for them to work together. Of course, a member could always pass on information to Alba and request the grouping of other members if they were to have a problem, and with their low number of members, it wasn't as if there was a large chain of people that one needed to go through before it reached Alba's ears in the first place.