Once you are approved by the University of Calgary as a driver, you should receive an email from drivers@ucalgary.ca.
The subject will be something similar to "You are fully approved to drive vehicles on behalf of the University of Calgary". In the email body, it should include when you are approved to drive until.
Please forward this email to sse.technical.support@ucalgary.ca. We will need to see this before you can book any of the trucks or trailers. You only need to do this once (until your approval expires).