I can help you add your other bank account in QuickBooks Online.
To connect your other accounts, you'll have to create a new one in your chart of accounts, then connect your bank from there. You must also have an online banking account to successfully connect this to QBO.
how to create a new account:
Go to the Gear icon and select Create a new account.
Click the New button.
The Account window opens.
For the Detail Type drop-down menu,
Assign a name and all other information.
Specify whether this is a sub-account of another account.
Provide the Opening Balance of the
Click Save and close.
Through the chart of account, here’s how to add
Go back to your Chart
Select the new account
that you’ve created a while ago.
From the View
register (or Account history) drop-down, select Connect
Follow the prompts to
connect your bank account.
If you have multiple accounts to
connect with the same online banking credentials, you can repeat these steps
for each account before moving to connect all of them at the same time.
That's it. If you have any other
questions or would like me to clarify anything else about adding your bank
account, let me know by leaving a comment below. I'm always glad to help in any
way I can. Have a good day.