Thanks for reporting the weird page in the wiki.
Shortcut 'S' is 'Save selected chords as progression. It is not defined (by default) as a "global" shortcut, so it works only when the master track is in keyboard focus. You can highlight "Global" next to the shortcut, and it will work regardless of the current keyboard focus.
You are right, a name and group could be specified. At the moment the new chord progression is placed in the "New" group, and the name will be the chord names. You can enter a name and group if you double-click on your saved progression, and by clicking on "Save" in the Chord Selector.
NTO wrote:I have imported one of my existing midi files. Then selected all the chords - one at a time, click&Shift click, or by drag in the bar region. Then press keyboard shortcut 'S' (tried upper and lower) trying to 'Save selected chords as progression'.
Nothing. Expected dialog to name or confirmation for existing chord strings Tried all three naming selections...
How should this work?