You need to have AHP, the SmartMacros plug-in and the iWitness or now called iWatch plug-in.
While in the macro design screen on the far right is a drop down list. This list shows your rooms, advanced options some other stuff and then "Video Functions". When you select Video Functions, right below that will be a list of options you can click on and drag into your macro. Scan Cameras is one of the options you can drag and drop.
(http://www.bdshost.com/X10/lpup.gif)---(http://www.bdshost.com/X10/lpup.gif)---(http://www.bdshost.com/X10/lpup.gif)---(http://www.bdshost.com/X10/lpup.gif)---(http://www.bdshost.com/X10/lpup.gif)----KDR