Some big box gyms do and a lot of them don't. You'll have better luck being able to do whatever you want at a smaller, strength focused gym where powerlifters and strongman types hang out. The benefit there is that you'll be the only one coaching "regular" folks on the barbell lifts. If you're in Columbus, you should have no trouble finding a gym like that. I'd start training at one of these places, get friendly with the owners and then ask if they'd allow you to bring people in to train.