Please reach out to the Registrar's Office. They will be better able to help you. They can be contacted through their live chat on their webpage https://registrar.mcmaster.ca/about/
Additional info:
Information about dropping and withdrawing courses: Withdrawing | Office of the Registrar | McMaster University
Information about dates and deadlines: Dates & Deadlines | Office of the Registrar | McMaster University
Information about refunds: Refunds | Office of the Registrar | McMaster University
There is a different process for:
- An undergraduate student
- A graduate student
- A McMaster Continuing Education student