How to Customize SLAM for Bank Account Transfers for Balance Event Type

We have customized the SLAM for the Cash Management module on TEST Instance for the accounting events (Miscellaneous Cash and Miscellaneous Expense) but we cannot find the accounting event for (Balance).

BALANCE code combination is picked up from the following setup.

Navigate to Accounting Setup Manager -> search for primary ledger-> click on update

Just below the check box "Balance Sub-ledger Entries by Ledger Currency" in Accounting Setups screen

"Ledger Currency Balancing Account" - this account would be used for ledger currency balancing lines

I want to Customize this on Location Segment