How to Manage Cash Plan in Oracle E-Business Suite

Anyone with experience on how to implement cash plan in Oracle E-Business Suite or Hyperion Planning.

A client has a requirement where expenditure is controlled by budget release (achieved using budget and fund check) and cash plan (availability of cash allocated for that expenditure). The goal of the second one (cash plan) is to ensure that DG of Treasury releases cash for that expenditure before payment can be made against that given expenditure. One option is to use the budgetary control or fund check in E-Business Suite for both budget release and cash plan but this option does not fit into their business process. They want the two processes to be separate as it falls within