Where to navigate is;
Banking center > forward receipts > forward from email
To activate receipt forwarding in QuickBooks Online for a client, follow these steps:
Log in to QuickBooks Online: Access the QuickBooks Online account associated with the client's profile.
Look for the "Settings" or "Gear" icon in the top right corner.
From the dropdown menu, choose "Account and Settings."
Click on the "Company" tab or section within the settings.
Look for communication or email settings within this section.
Locate the option related to receipt forwarding or unique email addresses. Enable or activate this feature here.