Click on the New Section button in the center of the builder.
You can choose the type of section you want to add. The section is the most basic type to add to a page.
This type of section allows you to add elements to your page.
The Grid option lets you set up a grid that separates elements.
The Saved Section allows you to choose from copied sections or templates and add them to your page.
Alternatively, you can add sections by clicking on the add blocks icon and then dragging the Section on to the page.