Would this be in reference to the radial pop up menus? Hold down control-shift and press LMB, MMB, or RMB and a radial pop up menu appears. If so, you can easily customize these. Change to the application that you want to customize (modeling, drafting, sheet metal, etc) right click on a menu and choose 'customize'. On the 'toolbars' tab, scroll all the way down and check 'Radial 1', 'Radial 2', and 'Radial 3'; then you will be able to drag and drop your desired commands in the position you want.
Another radial pop up menu appears if you click and hold RMB. This can also be customized but it does require editing a text file. I'm sure it is covered in another thread on this forum, but I can't seem to find it right now.