The unfamiliar office and imaginary co-workers

Date: 6/3/2017

I was in an unfamiliar office, and it was mostly empty. I sat down at what seemed to be a desk designated for me. I was about to put down a cup of coffee on my desk when a very friendly and helpful lady told me not to do that, but didn't tell me why. She then pointed to a row of desks behind where I sat and explained something about the people who worked at those desks, but I wasn't getting it. Suddenly, as she was explaining her reason, the desks filled up with people. It was as if her words came true immediately, or these people appeared out of thin air, but maybe it was only my imagination and I was daydreaming they were there.