Good day, thorusha.
You can manually add your cashbooks by creating the transactions in QuickBooks Online (QBO).
For example, you can create a bank deposit by following the steps below:
- Click the + New icon.
- Select Bank Deposit.
- Fill in the necessary information
- Select Save and close.
For more information about managing bank deposits in QBO, feel free to read through this article: Record and make Bank Deposits in QuickBooks Online.
Get back to me if you have other questions. I'm always happy to help you further. Keep safe and have a great rest of the day!