How to define a Budget Control/ Supplementary Rules when budget and actual is not using same values

Summary:

Given the scenario below:

CoA Structure: Company-Budget Center-Cost Center-Account

Company: 01 Entity A

Budget Center: 026 HR Dept

Cost Center: 999 All Cost Center

Cost Center: 001 Finance Dept

Account: 600000 Medical Expense

Budget received with CoA: 01.026.999.600000

Actual Spending with CoA: 01.026.001.600000

How to define the budget control/ supplementary rule for the above scenario where the medical expense is not able to budget at the actual cost center. When the budget user plan the budget is for all company. The requirement is user would like to track actual at actual cost center spending but budget at company. As long as there is a budget available in 026 HR dept for 600000 Medical Expenses, and regardless which cost center is spending in 600000 Medical Expense, the fund check should be passed. This is only for certain Expense type.