You can easily move a particular section into the slider following the instructions below.
Please launch the VamTam Builder :
Next locate the Column's settings:
Select the "Advanced" tab and add negative Top Margin:
In order to save your changes please click on the Done button, next Publish Changes.
The Beaver Builder guide can be found here:
https://support.vamtam.com/support/solutions/articles/227257-guide-to-vamtam-beaver-builder