How do you start gta online from gta v story mode?

The available source details the development and release history of Grand Theft Auto V, including its release across multiple platforms and the team behind it. However, it does not describe gameplay mechanics, such as transitioning from story mode to GTA Online. To start GTA Online, users would typically need to access the game's main menu and select the online option, but this specific process is not covered in the provided evidence. Additional sources, such as official game guides or tutorials, would be required to provide accurate instructions.