The article outlines the steps to add a Logo to a Sales Order and Sales Order Items.
FOLLOW STEPS BELOW:
1. Open a Sales Order.
2. Make sure it is in Editing status.
3. Click the Logos tab and click the green + button to add a Logo.
4. You can select which Sales Order Items the logo is applied to or not select any and leave the Logo at the header level if that works with your business flow.
5. Sales Order items can also be linked to Logos on the Order from the Item window in the Linked Logos section.
NB. For a quick tutorial watch below