Questions about what's permitted?

Hi there, I'm new to Bias Room, but I'm really loving the format. I currently have a lot of inventory so being able to track it is amazing. I mainly collect BTS. I've noticed as I've been putting in my collection, there are no premium photos or pickets listed that I can find(maybe I'm missing it). Is that something that's not an option to put as merch and or as a PC (tagging it as non-pc)? I have a good amount of premium photos and pickets and would love to input those into the system. Any feedback would be great 💖 thank you all 😁