I have a combo light/night light/fan/heater in the ceiling in bathroom. There are six wires on the switch 2 black, 2 white one red & one blue. I need a diagram on how to connect. I have three wires (one hot & two others)

Did you just install? If not, how was it wired before?

"The switch"? What switch?

Don't you need four switches? You'd need two runs of 3-wire from the switch box to the fixture.

If the circuit has the capacity and you want them all on at 1 time, 1 switch will work but I don't think this is what you want. Please explain.