This plugin takes away any problem you may have in creating columns and adding extra widgets to the Twenty Seventeen theme. This theme only has two columns for widgets which for many of us, is not enough. With this plugin you can add many widgets/columns in your footer.
Also the support received from the plugin author on the wordpress.org help forum “WP Online Support” has been excellent. They gave me some code to add to CSS which perfectly placed my widgets where I wanted them.