Institutional collaborative systems focus on providing the fast, and secure connections to students, teaching and non-teaching staff members. Access control is more important in these types of systems because different kind of users access the system on different levels. So a proper architecture must be there for these kinds of systems, for providing an efficient and secure system. As lot of work was done in RBAC like for grouping, securing the system, ease of use, and for enterprise etc but no one apply all these concepts as a whole on institution level. So, this paper will be a step towards administrative load sharing, securing the system, and ease of use.