The quickest way to add a new Row is either to add a preset starter component or to use the Quick Add Element dropdown at the bottom of the plugin to insert a new blank Row layer to your email design, when your Emailify email Figma frame is selected.
This will add a brand new empty Row layer with a single Column layer inside of it, which you can then start populating with content layers and customizing the styles (eg. adding a background, adjusting padding and spacing, etc) in Figma as needed.
๐ฃ Row layers can only be added directly to an โ๏ธ Email frame, and can only contain one or more ๐๏ธ Column layers inside of it.