Rather than having to go through each song and click add to playlist then click on the playlist, we should be able to go into the playlist and click add songs and then be able to just tap on the songs we want in that playlist from all the songs
Updated on 2019-07-24
From the desktop app it's possible to add multiple songs to a playlist at the same time. You only need to select all the songs you want to move (if they are not in consecutive order, press and hold Ctrl while you click the songs) > Right click one of the selected songs > Add to playlist. You can also drag the selected songs and drop them in the desired playlist.
Let us know if that helps. Have a great day!