How can I add "transfers " under the banking heading?

Welcome to the Community space.

Upon checking here on our end, the option you're trying to access is unavailable inside QuickBooks Online (QBO). However, you can utilize the Memo section and add the details to that field to make it easy to identify the purpose of those transactions. You can also check this article to help you categorize your transfers: Categorize online bank transactions in QuickBooks Online.

Additionally, we've got these handy articles to help you manage bank transactions, reconcile an account, and ensure your data stays accurate inside the program:

• Reconcile an account in QuickBooks Online.
• Fix issues at the end of a reconciliation in QuickBooks Online.
• Run reports in QuickBooks Online.
• Customize reports in QuickBooks Online.

It's been a pleasure to have you here today. Know that we value your time reaching out here in the Community space, and we'll be happy to help you anytime if you have any additional QuickBooks-related concerns. Stay safe, and have a nice day!