I have a 3-gang box which I will label A, B, and C, and Timer that I will label D.
A operates a light over the sink.
B operates the light on another fixture that includes a light, fan, and heater.
C operates the fan.
D operates the heater.
I am replacing the light/fan/heater unit with a light/fan/nightlight. I have no use for the timer. Since A controls an entirely different fixture, I am only concerned with B, C, and D for the new fixture.
This is the link provided in the instructions, however the instructions speak to a multi-function switch. There's probably a couple of different ways to do this, but what I would prefer is that B remains controlling the Light, C remains for the fan, and D gets dedicated to the Night light. I am not married to this set-up, but thought keep the switches arranged in deference to habit seems best.
Update: forgot to mention (duh!) that I have four (4) cables running into the 3-Gang. As I said, I am open to suggestions, so if you think it is best to purchase a multi-function switch, I can run out and get one, and I am not opposed to throwing in a GFCI as one of the 3-Gang. I am attaching a couple of images, but my apologies, as there is poor lighting with the breakers off.