I’ve been a member of a range that has had a fixed firing line and dedicated RSO for a while now. I just joined another range where the rules are a little different such that the first member on the range assumes the duties of RSO. This range also allows the first shooter who arrives to set the firing line for that range. Here’s my question...say I arrive first and want to shoot my handgun at 15 yards on the 50 yard range. I advance the firing line and set up at 15 yards. A little later some members show up and want to shoot rimfire at 50 yards on the same range. What happens? What’s the etiquette here?