How to access slider settings?

Me again. Sorry!
I am loving the fact that I can easily have sliders as page backgrounds. However, I need to access slider settings so that I can, for instance, add a caption on each slide. This should be possible (it's normal in revolution slider). I also want for the slider images to resize with the browser, which they are doing on the home page but not on this specific page.
I attach a screenshot of the only settings I am able to access when editing the slider. No text option here, but I'm sure it must exist somewhere.
Another slider question: as far as I can tell, I can only create a slider from the front end and not from the dashboard. Am I correct?
Many thanks