I remember being called back into work (by my psycho boss) in early evening because a batch job I was responsible for abended (abnormal end). Only when I got there it hadn't. The job was one I was second responsible. And the first responsible was there working on it. My PB said, 'If the section chief comes in it will look better if you're here too'.
At least it was time-and-a-half for me, but she was clearly out of her mind (I could, and have, told you stories).
Actually they are better off just sitting at their desks.
PHB might have booked a "friendship and collaboration" workshop with the HR department.
There is nothing quite like making drawings and building silly models from pencils while trying to fake enthusiasm.