Good Sam Community

OK, so apparently you can't post a picture to this forum or at least I can't figure out how to do it. Someone tried to help me but that did not work that I can see. Can this be done?

I have a question about the controls under a plate on the side of my pop up camper. What do these controls do? (see link)20180609_194912 (1).jpg

I have a question about the controls under a plate on the side of my pop up camper and would like to post a picture. How do I do that?