This 'trigger macro' brings up a long list of my macros (depending on the search).
QUESTION:
If I put the apps that I want to call up into a GROUP ('Triggered by name group' - they are only 2 at the moment) then is it possible to let KM only show those macros listed in the group instead of the whole lot?
You've set the "Trigger Macro by Name" action to only show active macros, but the screen shot in your first post shows the Group to be only "Available in these applications:" with no applications added. The Group isn't available so the macros won't be listed.
Add the appropriate apps to the Group setting, make the Group "Available in all applications", or change the "Trigger" action to show "Enabled" or "All" macros.