If I understand correctly, you have a dual switch with one switch stacked above the other.
If this is not correct, add a comment and I will help further.
On each side of the switch are screws with different colors.
The brass screws show in photo above.
Sometimes these screws are dark-colored.
The brass screws are connected by a brass plate so both screws are the same thing.
Your black hot wire from breaker goes to the brass screws.
On the other side of the switch are two independent silver-colored screws.
If the screws on other side of switch are dark-colored, then the screws on opposite side are brass and not silver colored.
Your black wires going to Load (fan, light, motor) go to each of these screws.
Each switch receives the same power source through the brass-colored screws on one side of switch, but on the other side of the switch, each wire is independent as each switch controls a different Load.
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