How can I change the DraftSiht shortcuts?

I have tried through Tools/Customize interface/Commands /Icon (Circle and copy). But DraftSiht does not update me, it must be that it has some security filter that prevents me from modifying the shortcuts of the sotfware. My question is this:
How can I change the DraftSiht shortcuts?
I would like the Copy tool to be like this: C+ENTER. Because it is the most used tool.
And the circle tool would be like this: Cir+ENTER.

Thank you very much

Eduardo. Architect.