If you use the Hampton Bay device, there is a single gang wall mount controller with separate buttons for the lights and for the fan.
If you use the GE switches, you need to mount them side-by-side in a double gang box , one switch for the fan speed control and one switch for the lights.
Again, this is a frequently asked question, and there are lots and lots of details, including pictures and wiring discussions, in the various existing threads. Just start from the FAQ and you will find them.
