Dimension Vis a Vis base package

In a Company there are two division which carries on a diversified business. Division A wants to slice and dice the data by following dimension 1. Department 2. Cost Centre 3. Purpose Whereas the Division B wants to slice and dice the data in the following manner A. Department B . Employee C. Function Now that do we need to get 5 Dimension ( 3 base pack + 2 extra). In such case all the 5 dimension will be visible in all forms Or do we need to go in for two separate licenses, since dimension is for only MIS analysis