Type about:config in the address bar and search for 'app.normandy.enabled' flag.
And in subsequent years they've done everything to hide this feature from the users and make it much harder to access (it used to be on the left navigation bar, now it's under 'Friend lists' (which also has been renamed…
Type about:config in the address bar and search for 'app.normandy.enabled' flag.
And in subsequent years they've done everything to hide this feature from the users and make it much harder to access (it used to be on the left navigation bar, now it's under 'Friend lists' (which also has been renamed…