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As you begin to drag a control from the Palette, you’ll see this [[Image:Action_stop.png]] icon 
icon, which means the control is not yet over a droppable area. You must drop controls into the body of the form; you can’t drop them into the toolbar nor can they be dropped below the Submit and Cancel buttons.
As you bring the control over the body of your form, the icon will change to one of the icons below:
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You can generate controls automatically from schema elements, but you must first [[V4_Data_Sources_and_Schemas#Uploading_a_Schema |upload your schema]] into your frevvo Live Forms application. Once you've uploaded the schema and added schema elements to your form's Data Sources area, you can generate controls from these elements automatically. See [[V4_Data_Sources_and_Schemas#Generating_Controls_from_Schema_Elements | Generating Controls from Schema Elements]]