How do you create opening balances in Reporting Ledger ?

Summary:

The primary ledger currency is NZD and was created 3 years ago. There is a requirement to do consolidation in AUD currency. We are setting up a Reporting Currency (Journal Level) where reporting currency is AUD and the "First Furture Period to Convert Journals" is Jul-23. When we do this, the reporting ledger initially does not have an opening balance for Jul-23.

Please note: The Jun-23 period in Primary Ledger is closed and Jul-23 period in Primary Ledger is Open

How can we create an opening balance for Jul-23 period in reporting ledger?

Content (required):

How can we create an opening balance for Jul-23 period in reporting ledger? - Is it manual or Oracle provides an automated job/feature?