Divide a screen into two blocks

Hi, guys. Please help!

I need to:

  1. divide a page into two blocks, so that each container is independent and can change the size relative to each other. My screen/page in Adalo and example is below/attached;

  1. make a page scrollable. I can’t see on the preview mode the regular line which helps the user to scroll down to the page

P.S. …even this page of request form in “forum.adalo” is designed as divider (screen attached). I need the same)))