How do i switch between gta v story mode and gta online?

The only verified information available pertains to the development and release schedule of Grand Theft Auto V, detailing the size of the development team, the studios involved, and the platforms on which the game was launched. No portion of the source discusses gameplay mechanics such as how to access or toggle between Story Mode and GTA Online. Therefore, specific instructions on switching between these modes cannot be provided based on the evidence supplied.