FlatView - Sort by Name & Size

I have set up a Lister Style that when selected it executes a Flat View, Set FLATVIEW=On,MixedNoFolders, in Detail Mode. It all works well.

Now I would like to be able to sort by Name & Size. Since I have many names that are the same I would like to display the sizes within the duplicate names.
Name Size
Bob 3mb
Bob 5mb
Bob 6mb
I did try the Sort By & Group By with no luck.
Bob

Click the Name column first, then hold Ctrl and click the Size column. Opus will then sort by name-then-size.

WoW!
Bob

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