If it's mounted at the recommended 8.5 feet, it's ~impossible/extremely unlikely for the people in the room to get a dose that exceeds the 222nm threshold limit values set by ACGIH (see here https://uvmedico.com/research-and-publications/acgih-2021-th...). You can be standing around in the lamp's hotspot literally all day and still be fine. Check out this sim tool: https://illuminate.osluv.org/?preview_lamp=Aerolamp%20DevKit

But if you're itchy about direct exposure you can also just leave it horizontally on a high shelf or something and it'll still work pretty well. I see lots of people doing that just because they don't feel like buying mounting equipment. It'll just be more dependent on vertical air currents circulating in the room to work well so be super sure that you have a ceiling fan/HVAC/air filter running while using it. Doesn't need much air movement, just a bit, as long as the room air isn't totally still/stuffy.