Hi @slp114 welcome to the forum!
Unfortunately, at present, you can only delete custom macros from the preambles. To access these macros, navigate to the preamble, which can be found under Document → Part → Show (Create) preamble
or Source → Edit preamble
. You can also use the shortcut provided alongside the menu item, such as Option + Command + P
for macOS style. (If you cannot find Source
on the main toolbar, then activate it under Tools → Source macros tool
.) Once in the preamble, simply delete the macros you no longer need.
For custom keyboard shortcuts, you’ll find a remove
button at the bottom of the shortcuts editor. Select the shortcuts you wish to delete and click remove
.