If your friend or family member requires a TRV to visit Canada, their initial application must be made outside the country, at the visa office responsible for the applicant's country or region. You may provide them with a Letter of Invitation, explaining how you will help the person to visit Canada. For example, you may state that you will pay for plane tickets or accommodation. While a Letter of Invitation may help a TRV application, it does not guarantee that the person will receive a visa.