Spotify, adding a song to a playlisy

[tezcatcatl]

I feel very dumb for asking this because I believe it should be VERY straight forward. But for the love of god. When you want to add a song to a certain playlist via your Tesla, how do you do it???

Look at this photo. What am I missing?
There is a + button which I have no idea what it does. And thats it..

I have several playlists and maybe I want to add a song to 2 of those lists via my car touchscreen. And i cant..

 

[Airhawker]

The + adds songs to your favorites. Need to use your app to add to a playlist.

 

[DerbyDave]

Sorry, playlist stops working on Nickelback.