Pagan Clay

Hi y’all! Beginner ceramist here! I have some over glaze decals and lusters I want to try, but I’m in a community studio that won’t fire that low (come 018-019). I have however found a friend at the studio with a personal kiln willing to fire this low. However she uses bars instead of cones. How can I convert the cones to bars so that she knows how to fire them? Is there even a way to do this? Here’s the decal for reference- https://www.chinaclayart.com/collections/overglazedecal/products/gold-bee Thanks in advance for your time, help, and input!