Yes, you have to buy the template that supports it. I bought 3 of them 5 years and use them still. The one I use the most doesn’t have the sidebar option. I add my logo to the list of pictures which I don’t always get in because of the 12 picture limit.
Let me know if you are successful in making changes. I have made minor changes to no avail. I basically have used the editor mode to remove bad code from downloads from ebay before GS fixed the download problems