MSS - OA Framework Extensions Used?

 All -

We have recently rolled out a pilot of manager self service including the following menu items:
     - Change Manager
     - Change Location
     - Change Department, Job and Location
     - Change of Status (All Fields)

We have received some feedback from our users about having certain fields default based on defined business rules. In particular, Grade has been an issue. We have a grade structure of Grade Name|Zone. Zone is based on the combination of job and location. We have been told by our IT group that this is an extension of the OA Framework and they do not support extensions.