Every month expenses are accumulated in an account/subaccount combination that identify an expense account and cost center in which equipment repairs have been performed.
At the end of each month these equipment repairs are to be reallocated, to a fixed set of 5 account/subaccount combinations. The allocation percentages will depend on the source cost center and will be on a different percentage basis, depending on the percentage of time spent working on the equipment for respective departments.
The desire is to build a history of allocation rules, ideally by using a statistical ledger with the different allocation percentages.
I can't figure out how to have a different set of percentages apply to the allocation from each source unique cost center when the destination accounts/subaccounts are constant without building a different allocation for each source/cost center; that could number in the dozens or more VERY quickly