Hello MOUSE.
I agree somewhat with Perna, that you should talk to someone regarding that there may be times when you need to get off a few minutes early. Usually this practice is okay as long as they know ahead that there is a possibility you need to leave early, and have someone that will be in your place when you leave. I hope everything works out for you MOUSE and you can get calmed down from all of ths upheaval at work. Take care Soidhonia