We use Outlook in our office. Our PD is trying to get the entire department to use this feature so we can function more efficiently. This morning our PD used two employee calendars as a demonstration on how to use the calendar feature. At this demonstration I noticed that the one featured calendar belongs to our Historic Preservation Planner. Our HPP is currently working on his PhD and writing his dissertation. A few months ago our HPP mentioned he would be coming in earlier/staying later so that he could work on his dissertation while in the office in order to have some quiet time. I agreed but asked that he only work on it outside the normal work hours so that work time would be used for work. He agreed.
At today's meeting while the group was viewing his calendar, I noticed that he had blocked off a significant amount of time, during normal work hours, to work on his dissertation - a violation of our agreement.
How should I handle this? Confront him? Pretend I didn't see it?
side note - I have my own unfounded issues with this guy, of which I am aware, so I tend to be hyper-aware of my response/interaction with him. I don't want to get on his case just because I don't like him.