Salem

I've just rented a player stall for the first time. I've paid for it and paid my rent but I can't work out how to load items onto the stall to sell.
I've searched the forum and wiki without success. Can anyone help me out?

Set a price and then drop the item on where the picture displays normally. Have to open inventory before engaging the stall, otherwise it won't allow it to be opened (at least on my client)

Thanks Belgear - I was opening the stall first