If you're referring to disconnect bank feeds option in QBO, you will edit the bank account from the Chart of Accounts and select the Disconnect this account on save box.
- Go the Chart of Accounts from the left Dashboard Account
- Select Bank account in question
- Select Edit drop-down arrow next to View register under Action column.
- Select the "Disconnect this account on save" checkbox. (See attached screenshot below for reference).
- Save & Close.