We will always work in the view pictured unless stated. Pictured above is the object we will be making. Ok Lets get started. The first thing we need to do is make a object that we want the buttons to be in. We could use a simple sphere, but that would be boring.
Lets make a object that has some complex curves to it.
Now we want to make this curve into a surface. We now want to build this surface into a solid. Sometimes when you do a extrude, it won't go in the direction you want. Now in the front view click anywhere, then click above where you just clicked. This will tell Rhino that this is the direction you want the surface to exturde in.