it's what i did.
the launcher is not there by default so i have to go for it. i go in the folder of the game, not the one of the client, but the profile is changing also when i'm using the client and not when i'm in the game
i just noticed now that if i keep the cursor on the icon, i can see the path, and in this case i have more than one, even if i'm selecting only the one in "Game" folder