Go to:
Open lol.properties with any text editor.Quote:
League of Legends\RADS\projects\lol_air_client_config_na or euw\releases\0.0.0.XX\deploy
Find lobbyLandingURL and just change it to whatever you like
Example:
I'm sure there's a lot of things you can do with this, but I can't figure it out, so I'm just leaving it here
All links opens in your browser in a new tab.
P.S: You can also modify the storyPageURL to change where the feather icon redirects you to when you click on it.