Well, regarding the multiple images, there is only 2 slider options in free version of theme, if you want to increase, you have to create a child theme: https://codex.wordpress.org/Child_Themes and set it up in the core files otherwise, you can easily purchase our PRO version of eVision theme by visting this preview demo: https://evisionthemes.com/themes/evision-corporate-pro/ where you can add unlimited theme options there.
