Deleting tracks from own playlists

Sorry, this may seem a very basic question but just how do you delete a track from a playlist ?
I’ve selected a track but can see no Delete or Remove option anywhere - I’ve tried all of the available three dot menus. There is no ‘Remove’ icon that appears as illustrated in the ‘manual’.
I must be missing something.
These playlists by the way are those tracks saved when streaming - they are not, yet, in my library or a ‘hard’ copy.

If I understand your question correct it’s quite simple
On the track you want to remove , click on the three dots ……remove from playlist is at the top of the list

You can’t use Roon to remove or add tracks from your streaminig Playlists. You have to use the native streaming Apps. It only works if you are saving a local copy of the Playlist into ROON. And I believe the Tracks have to be in your ROON library.