Collecting info (Locally only):
%ProgramData%\Riot Games\to see what games are currently installed, and where, as well as what
RiotClientServices.exeto launch to run them properly. No idea why? See a shortcut for one of their games for how they launch. A little odd.
%LocalAppData%\Riot Games\Riot Client\Datais copied out into a local folder when a 'new user' is added. This will be swapped out later.
RiotClientPrivateSettings.yamlis swapped out for a local copy from another account. The Riot Games Launcher and any of the games do not "need" to be open or closed while switching accounts. Everything is automated. They should be closed by the program if running.
Save Currentbutton after logging into an account with Riot Games (Or one of the game clients, as it is shared). Do not "sign out" via Riot Games or any game, this will forget that accounts password.
Save Currentin the TcNo Account Switcher - Riot Games list, next to the launch. You should be able to switch to and from this account.
To remove an account from the list: Right-click on an account and hit "Forget". This will remove the saved, or 'cached' local files and the account will no longer show on the Account Switcher's list.