www.wysiwygwebbuilder.com

I can see there is an option to add padding inside the textbox control, however I would like an option to add a margin above and below outside the control.
I am certain this is possible. I used to do it in Dreamweaver ( a while ago )

Right click on the text object and select margin.

You can set the margin via the 'Margin' properties.
The margin properties are available in the arrange menu, context menu and Property Inspector.