The following table shows the conflicts and preferences based on the 11 replies to the questionaire: conflicts: MoAM MoPM TuAM TuPM TuAM TuAM TuPM MoAM MoPM TuAM TuPM WeAM ThAM ThPM MoAM MoPM TuAM WeAM ThAM ThPM WePM ThPM WeAM WePM ThAM ThPM TuPM WePM preferences: 0 1 2 0 1 2 0 1 Based on the responses the best choices for the exam period office hours seem to be Monday and Wednesday afternoon (from 1:30 to 4:30 PM). Everyone should be able to attend at least one of those time periods. You can also ask questions by e-mail. It's probably not a good idea to leave questions in my mailbox as I will only check it on Monday and Wednesday afternoon.