How do you switch between characters in gta v s story mode?

Grand Theft Auto V is a 2013 action‑adventure game developed by Rockstar North and published by Rockstar Games. The single‑player story follows three protagonists—Michael De Santa, Franklin Clinton and Trevor Philips—as they attempt to commit heists while dealing with corrupt officials and powerful criminals. While the game world allows free navigation on foot and by vehicle, the Wikipedia excerpt does not describe the method for switching between these protagonists during gameplay. Consequently, the specific controls or menu options for character switching are not covered in the provided evidence. For details on how to switch characters, one would need to consult additional sources such as the game's manual, official guides, or community forums.