At my place of work , a sitting group has started up. On our lunch hours we assemble in a physiotherapy room , some in chairs, some on Seiza benches and some on Zafu's , and sit for 30 minutes.
Aside from instruction that I had received at a Zendo, I have never sat with anyone else before.
It was an interesting experience.
Most had no idea what they were doing, or what to do, but all had a desire to try sitting in meditation.
Leading the group is an experienced practitioner in the Thich Nich Hanh tradition who did a great job of instruction.
Sitting with others, being distracted occasionally when people fidget, adds to the challenge of staying focused on the breath to be sure.