Hi and welcome to Beoworld.
"My questions are, like on other TVs, is there a button that can toggle through the different inputs on the TV?"
No, not necessary. If you have assigned your sources for example V.AUX for Wii, DVD for the Playstation and CAMCORDER for the stb you just press DVD or V.AUX and the Avant will be powered up, turns to the desired position and switches to the chosen AV port. I assume you are using a Beo4.
V.AUX and CAMCORDER are hidden buttos in the LIST. If you do not find them, just add them. The manual describes how to do that.
"Also, how do i access the 'camcorder setting' so i can watch the satellite without having to turn the TV off and on again?"
Should work as said above, just press LIST until CAMCORDER and then press GO.
Hope this helps.
Stefan