How can I add a column to a section in the Elementor?

To add your preferable elements to a template you must put them into a wrapper box called Section.
When adding a new section to a template, you can select how many columns it needs as well as choosing their structure.

You can also add a new column to a section after you created it and choose a structure for it.

 To add a column to an existing section

1. Right click on the Edit button that appears on the upper-left corner of each column of the section.

2. Choose + Add New Column. A new column will add in right of the selected column.