I actually enjoyed my nurse support group meetings. I had to quit going due to my work schedule when I got a new job, but I liked them. Sometimes it was emotional while others it was just mundane life stuff, but I liked it cuz I felt like everyone there could really relate to me. I only shared as much as I was comfortable with but that was more than anything I'd ever share with coworkers, and others probably shared more than me. I originally went thinking it would be like an NA meeting and we'd talk about recovery, NA/AA principles etc, but it was nothing at all like that. We just go around the room and each person says what's going on in their lives, whether it's personal, with kids and spouses, or work related. Often it had nothing to do with recovery, but then all of life is about recovery, and all those little stressors can challenge a person's recovery. So yeah, it was kind of therapy-like, but I liked that. One thing I never forgot though was that anyone there, especially the facilitator, could get in touch with TPAPN to report on me, so I knew never to admit to breaking any rules at all (not that I would drink or use, that's not even an option! But going camping instead of attending my NA meetings, working an extra shift that put me into 4 hours of overtime, stuff like that).
If you're not comfortable sharing personal details, just talk about work, or monitoring issues like paperwork, the drug screens, etc. Anything that's on your mind that you need to talk about, get advice about etc, that other people who are not in monitoring wouldn't understand.