A TDM is the abbreviation for “tussen de middag” (during lunchbreak). In the large breaks on Wednesday and Thursday this means a board member is present during 12:40-14:00. In the smaller breaks on Monday, Tuesday and Friday, a board member is present from 13:30-14:00. To see who will be present, check the weekly mail (send on Sundays). You can drop by to ask questions or have a nice chat.