In the reallocation tab of the Ledger master account, you may enter any percentage as long as the total of all the reallocations is 100%. Since the is based on building square footage, why does it vary every month?

Another approach would be to use the financial reporter to create a reallocation batch to be imported from Excel.

Or perhaps create an Excel spreadsheet that does all the match you need and creates an importable invce ath in Payabless.