How much can I modify the interface?

Hey whatsup everyone, I wanted to know if I can personalize the interface this way: I’d like to add the bevel command on the tool menu on the left in edit mode. I’d also like to activate a context menu with the right mouse button with the tool commands as well like in 3ds Max or Cinema4d.
I’m not really comfortable using the keyboards.
I tried to see on the user personal preferences but I was not able to find a solution.