Open terminology. Right click on the title bar. Click the first item on the popup menu and set add to favorites. Now you should be able to have the quick access to the app with right click on the desktop. If not, just restart Moksha with ctrl alt end.
Why dont you add terminology to the default iBar launcher which us on the shelf? I think it is more handy than on the desktoo which could be covered with windows... Just my POV
Anyway, adding apps to the desktop is possible but little bit tricky.