There are two ways you can add a slider to your page. From page’s General Settings (your screenshot above), and second by adding it as a Visual Composer element. Please see below detailed explanation for both:
1-Slider from General Settings:
In your page scroll down till you see the General Settings. Screenshot: https://postimg.org/image/allvrxfcl/
Click the second tab, Sliders Options. Here, the fist option is to choose the slider you want to use. The available sliders are: Revolution slider, Layerslider, Flexslider etc. Open the drop down to see all options.
Select the slider you want to use and keep customizing it’s options.
In case of the Flex slider in the screenshot you pasted, click on the “Add/Edit slides” to customize slides. See screenshot: https://postimg.org/image/yj3jqve2d/
2-Add slider form Visual Composer:
In your page, add the “layerslider” or “Revolution Slider” element from VC list. See screenshot: https://postimg.org/image/etl9ef65x/
With VC elements, you can add the slider in first row or wherever in the page. While the first method adds it only at the top of the page.
-Revolution slider and Layer slider are two external plugins you install after installing theme. They are optional, you can not install them if you do not need them. After installing, each will create a menu item in main menu bar. If you click on one of them, the slider options will open.
Create new slides, or edit old ones. Then the sliders created in the main program, are added to pages using the 2 methods described.
Screenshot: https://postimg.org/image/px9gxrgtx/
I was able to replace the image on a slide but how do you add a new image. I got mine set to Homepage 4 which was from the Digital Agency but it has one slide only.
You need to add another slide to the slider. Create a new slide -> Assign it to your slider. Then customize the slide in main slider options (Layer slider or Revolution slider options in main menu, the left sidebar menu).
Check out the documentation section for Revolution slider: https://codeless.co/tower/documentation/main.html#revolution_slider
