That's helpful thanks! It's not intuitive but at least there is a way to do it.
Even easier...use the layer panel.
Clicking on the objects you want to select is far easier and more intuitive and efficient (less brain power, less eye movement, less clicking) than trying to figure out which of the 20 geometric objects in the Layers panel are the ones I want.
So the Layer panel route is not easier at all, for me anyways.
I hate it when badly designed and unintuitive features slow me down ... grrrr!
what also will work:
1. Select one object in the group with the Selection Tool ( the "black arrow tool" ).
2. Then do menu command: Select All.
3. Hold the Shift key and deselect by clicking the objects that are not needed.
Thanks ... it's a little crazy that UNselect works this way, but not selecting!