How to attach a new Cost Allocation KFF to an existing Business Group?

Hi

We have a requirement.

The customer already has Oracle HR and Payroll implemented. They want to implement Oracle GL and also change the existing Chart of Accounts

Since they want all the payroll transactions to interface to GL, the change in the COA structure requires us to change the Cost Allocation KFF structure as well

In case we create a new Cost Allocation KFF structure, how can we attach the same at the Business Group

Regards

AT