I’m sorry if you found the Sync-Lock page confusing but you are the first two people who made this comment AFAIK (a few other people understand the Manual but think the Sync-Lock feature should behave in other ways than it does).
I added a note to consider tweaking the text (the Manual is frozen for 2.0.2 now).
However I think the main reason you found the Manual confusing is that you approached it with the assumption that selectedness defines groups. In the code, every track (even one track) is implicitly in a group. As the Manual says, Label Tracks can be used to demarcate groups. Selectedness only defines groups in the very limited sense that the Track Control Panel Sync-Lock icons are off if no tracks in the group are selected. Even that icon is misleading, because Time Shift Tool moves all tracks in a group even if the icons are off.
All the Manual says is that all or any tracks in a group can be selected (but selectedness does not define the group).
To prove what I am saying, set up
Audio Track 1
Audio Track 2
Label Track with one label
Audio Track 3
Click in the background to deselect all tracks. Enable Time Shift Tool then drag in audio track 1 or 2. Audio tracks 1, 2 and the label moves, audio track 3 does not.
So to Sync-Lock only desired tracks, add label tracks where needed. There is no way to sync-lock only tracks that have the selection, if other tracks in the group are not selected.
I will add two votes that Sync-Locked Tracks should be defined on selectedness, but I would not support that. I think it would be confusing because it is almost identical to “Sync-Lock off”.
I think there would be some consensus that groups should not be (only) definable by Label Tracks. The most intuitive method (IMO) would be to have a button and icon on the Tracks that toggled and displayed the track’s Sync-Locked state.
But for now, what are you ( Jellokittie ) trying to do? Can you do it now by selecting tracks with Sync-Lock off?
Gale