switching to water pump from city water

[cougarman42]

I m so embarrassed to ask this but we bought a 2010 cougar last yr and am going to a state park with rustic site ie no water or electric, but I cannot find how to make water pump pressurize tank after I filled it. We have about 80 days camping with it but all full hookups. Where is valve(s) and what position ? This is on 324rlb 5er. Any help is greatly appreciated. Blessings on u all !!