I can share some insights about connecting your online banking account, @jody3863-yahoo-c.
You can only connect your online banking account once in QuickBooks Online (QBO). In case you're having subaccounts under your bank account, you can go to your Chart of Accounts and set up your parent and subaccounts.
First, you'll just have to identify how your bank sends the downloaded transactions in QBO.
Connect only the parent account if the transactions download to one account.
Connect the subaccounts if the transactions download to the individual accounts.
Here's how to create a subaccount:
Go to Gear icon (⚙) and select Chart of Accounts.
Pick on New and set the account type and detail type.
Select Is sub-account and then enter the parent account.
Give your new subaccount a name and a description.
Select When do you want to start tracking your finances from this account in QuickBooks option.
Let me know if there’s anything else that I can assist with about your adding your bank account by leaving a comment below. I’m always here to assist. Have a wonderful day!