Stop in for a cup of coffee

They had us separate all the lunch tables tonight and put one chair at each, then put the xtras in storage. Something I thought should have been done days ago. An hour later, 2 of the younger guys have 2 tables pulled together. I told them they needed to separate them or we were told to keep removing them till there were none left. I'm not there supervisor though, so really can't enforce it. Just stay away from me... I did have to tell people to back off a few times. The guy I work with kept jumping right in my space. Told him, unless we absolutely need 4 hands to do something he needed to back off. He's older and probably more at risk than me, but people just ain't getting it. As said, I still feel we are low risk here, but that could change quick and nobody will know till it's too late. I try to get a little stricter on it every day.