Download Any template from Envato & How to copy the download template into webStudio Platform ?

how to add a background video behind any text or div fields in webstudio...

I am designing a website where I want a dynamic pricing table where I want a button that will change the the table data from monthly pricing to yearly pricing .. for monthly there is 3 plans and for years there is 3 plans too but the value changes based on that.... now I want it to implement in webstudio.. how can I do so ?