Custom borders/logo overlays with Selphy CP1500

I am photographing a step and repeat that requires on-demand printing at the event. Decided to go with the Selphy CP1500. I'm trying to figure out a workflow that will be fast and something I can process in bulk on location.

I've got it pretty much figured out, but the event hosts have asked to add a logo overlay on the prints. Is this something that could be achieved in the SELPHY app with a custom frame? I would really like to not have the extra step in processing before sending to print.