Hello,
1) Read the slider documentation https://www.themepunch.com/faq/how-to-change-the-timing-of-slides/
2) Read the slider documentation on how to edit navigation https://www.themepunch.com/slider-revolution/navigation-editor/
3) Edit carousel settings for the items space http://prntscr.com/q5k0vg
4) There is no such option in revolution slider as we know. But you may also ask Revolution slider author in the comments area to be 100% sure.
5) https://gyazo.com/f160fe302fe17d5f4fa10ca8518d7fff
Regards