Sub-37 Editor Standalone
OS X 10.11.2
In the Librarian panel.
Click Factory Presets in left-most column (assuming they’ve been filled in from the entries in the HW column).
Click on some entry in the middle column.
Right click (two finger tap) on that entry.
Select Copy from the pop-up menu.
Select the User directory in the left-most column.
Right click (two finger tap) to get a Paste menu.
Paste the copied preset.
A different preset is added to the folder.