Button Sets

I need to ad a new button and place it on the Grid. I want the button to have the same style as other buttons in the Project.
When I go to Button Editor I see no way to add new buttons. Probably could download existing images , edit it in Photoshop and then use it in SC, but this makes no sense of using Button Editor .
I really do not understand the concept of SC and the buttons. I know I can edit text/image for existing ones, but how one can create his own button set ?

Arthur

Yes, you how to create your own menu! But it is very limited!

Sorry but I do not understand this: “Yes, you how to create your own menu!..”

Do you know what folder holds the buttions set images ?
Arthur

add that I’ll explain in more detail… Skype: fredkeyster