I know how to manually enter bank information and delete a bank account, Steven.
I'll lay down a few steps to manage your bank accounts in QuickBooks Online (QBO),
You'll want to connect your bank account to manually enter bank account information for automated income and expense tracking. I'd be glad to guide you on how:
Go to the Transactions menu and select the Bank Transactions tab.
Click on the Link account button.
Then, choose your bank and enter your login credentials.
To delete a bank account, you can disconnect it from online banking if connected. You can follow the steps below. Here's how:
Go to the Transactions menu and choose Bank Transactions.
Choose the tile for the bank account.
Click the pencil icon, then select Editaccount info.
Select the Disconnect this account on save checkbox.