Hi RickD7696. Thanks for coming to the community. Currently, the only custom forms supported for upload are estimates and invoices. If you'd like to learn about that process I recommend the article for uploading custom form styles. It has a step by step guide as well as some great formatting reference. I'm also going to be sure to input feedback about the desire for the ability to upload styles for Sales Receipts/Donor Receipts as well.
If you need anything else, be sure to leave a reply below. Have a great rest of your day.
