If you are from a country that requires a visa to visit Canada, you must apply for a temporary resident visa just like any other temporary visitor to Canada. There is no separate application for business visitors. The temporary resident visa covers all visitors, including those in Canada on business.
Business visitors usually stay in Canada for a few days or a few weeks.
Cross-border business can include activities like:
buying Canadian goods or services for a foreign business or government
taking orders for goods or services
attending meetings, conferences, conventions or trade fairs
providing after-sales service (mainly supervision, not hands-on labour)
being trained by a Canadian parent company you work for outside Canada
training employees of a Canadian subsidiary of a foreign company or
being trained by a Canadian company that has sold you equipment or services.
and my Q was what should i select under purpose of your visit? not a category.. now i hop Canadian embassy in lahor approve my application.