I have read the Accounting documentation and it states that Odoo automatically creates journals for transactions:

"

Double-entry bookkeeping

Odoo automatically creates all the underlying journal entries for all accounting transactions (e.g., customer invoices, vendor bills, point-of-sales orders, expenses, inventory valuations, etc.).

Odoo uses the double-entry bookkeeping system, whereby every entry needs a corresponding and opposite counterpart in a different account, with one account debited and the other credited. It ensures that all transactions are recorded accurately and consistently and that the accounts always balance."

Is there a way we can customize that automatic behaviour (just like SLA does in Oracle GL?)