You will need a daily parking permit. 

1. Go to any Pay and Go pay station in Montreal.

2.  Enter the code PMR01 to park in any resident parking area in the Plateau for a fee of $14. To park east of Rue Saint-Denis (excluding rue Saint-Denis itself) for $8, enter the code PMR02. Follow the instructions on the terminal.

3. Print the ticket and place it in full view on the street side of the dashboard of your vehicle.