The Keyboard Shortcuts in AutoCAD which are assigned by default need to be changed sometimes for personal favorite commands. For example, I needed to change the COPY command to ‘C’ and CIRCLE command to ‘CR’, as I use COPY very often and more than CIRCLE. For doing so,
From the ribbon, go to –
Tools > Customize > Edit Program Parameters (acad.pgp)
Now change the required shortcuts in the Wordpad.
If not activated, then close and restart AutoCAD and try again.
Learn More: AutoCAD Forum
Obsession Beats Desolation 