The logo can be set from two places:
Through the Billing section:
Log into the system as an Agency User, Owner, or Admin.
Click the Settings icon in the Main toolbar.
Click the Billing link
The Office Settings page is displayed. This is the global setting of the system.
Scroll down the page to the Include section.
Check the checkbox besides Logo to include the logo on invoices
Log into the system using Admin credentials.
Click Payers under the Clients menu
Open up the Payer profile for which you want to include the logo on invoices.
Check the checkbox besides Logo to include the logo on invoices.
Click the Update button to update the record, or the Cancel button to cancel the change.