thats what it says
UNDERGRADUATE PERSONAL COURSE TIMETABLE
SPRING/SUMMER SESSION: GRAPHICAL PERSONAL TIMETABLES WILL BE SELECTABLE BELOW ONCE YOU HAVE COMPLETED YOUR COURSE REGISTRATION.
FALL/WINTER SESSION: GRAPHICAL PERSONAL TIMETABLES WILL BE SELECTABLE BELOW AFTER THE PUBLISHED TIMETABLE RELEASE DATE IN AUGUST.
FOR ALL SESSIONS: AFTER YOU RECEIVE YOUR FIRST PERSONAL TIMETABLE AND SOLAR IS OPEN TO YOU, CHANGES WILL BE REFLECTED ON YOUR TIMETABLE IN APPROXIMATELY ONE HOUR.
YOU ARE RESPONSIBLE for reading and understanding the "action required" items which may include conflicts that need to be resolved. You need to resolve the issues and select all the components for a course (core, lab and tutorial) before the end of the Drop and Add period for each term.
Personal timetables will be refreshed nightly to reflect the most current course scheduling information including times and room locations. Normally, no changes will be made the week before the start of term.
Check your timetable during this week to ensure you are in the right room at the right time.
To view the master course timetable and related topics use the following link:
http://registrar.mcmaster.ca /scheduling/coursett.html