You may not know that when you lend your vehicle, you're also lending your insurance. That's because any claims will be made through your insurance, not the driver's.
For that reason, your policy requires that the driver you're loaning the vehicle to be qualified and/or licensed to drive, depending on the province. Additionally, the same rules outlined in your policy apply to the other driver. For example, if your policy only allows personal use, the person borrowing your car cannot use it for deliveries or Uber.
If you routinely loan your car to the same person, you should name them on your policy as an occasional driver, too.