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The switch marked security is for the large lights outside one switch will put on the two lights or you may have one for each light.
You will have a water heater switch for the AC element in WH and a switch for using the LP gas for WH. You will also have a switch on WH face that needs to be on so the element will work.
TWO switch's near bed are for your overhead speakers in bedroom control for volume off fader control of your radio.
if you have a third would be for security light on bedroom slide.
You could possibly have a security light on your LR slide controlled by a group of three switch's for interior lights.
The battery cut off switch is to disconnect your house batteries when only in storage all other times leave operated so your BIRD System can keep all your batteries charged when you have the shore power cord plugged into at least a 110 outlet.
You have a step locking switch in display area and a LP switch which cuts off power to your LP Detector so it will not discharge your chassis engine batteries when in storage.
In the future please post a new thread for your questions, your question may get lost on someone else's thread.
You can always add a question on your thread with a new post.
Enjoy the forums.