What regulatory requirement must be met to allow you to install an amateur radio transmitter on behalf of another person?

In Canada, the Radiocommunication Act and associated regulations strictly govern who can install, repair, or operate amateur radio equipment. To install an amateur radio transmitter for someone else, the law requires that both the person performing the installation and the person receiving the service possess a valid Amateur Radio Operator Certificate. This rule ensures that the equipment is handled by a qualified individual and that the owner/operator is legally authorized to possess and use the transmitting equipment. Options suggesting only one party needs a certificate are incorrect because the installer needs authorization to work on transmitters, and the owner needs authorization to have it installed for their use.