This article by Nigel Arnold at Set 3 showed me how to use gadgets in opmanager to display pages from Service Desk within a OpManager CCTV view.

http://set3manageengineuk.blogspot.com.au/2014/12/servicedesk-plus-in-opmanger-dashboard.html

a little bit of dicking around, I have discovered I can do this : <iframe src=" http://helpdesk/WidgetDetails.do?widgetId=1&hasFlashCharts=true" width="400" height="200"></iframe>

to include the gadgets from the dashboard view. so use Chrome to do a View Frame Source  by right clicking on the title of any gadget, and then take the URL into an new iframe in Opmanager.