Hello,
I saw the screenshots you attached.
1) The buttons in the slider you can configure by editing the slider that you have used on the homepage from Dashboard >> Slider Revolution.
2) To edit the buttons you need to edit the section used in the pricing tabs. If you are still unable then provide admin panel login details of the website to check it myself and help you out accordingly.
3) And to make a scrolling button you need to use the button element and set it like a scroll. And then you need to set the link of the button as for example #scroll. Then add the scroll as the id of the row.
Screenshot for Clarification: https://ibb.co/G3x8t1g
Regard’s.
Xtemos Studios.