Currently QTI tab is only visible in advanced view.
On this tab you can create QTI (Question and Test Interoperability) items. QTI implementation in Concerto is still in early beta and doesn't support full QTI specification. Concerto implements QTI v2.0 specification.
For more information about QTI please visit: http://www.imsglobal.org/question/
You can set the following test properties on QTI tab main form:
At the top of the main form header there is an icon to change QTI description. This description will be later visible when hovering over question mark icon next to selected QTI in the 'QTI' tab list view.
This is the declaration of the QTI XML. When changing the code here, be sure to click revalidate button to check if the XML is valid and understood by Concerto.