From Titan v10, the Capture visualiser is integrated into the console. This can provide a realistic simulation of your lighting which is really useful for pre-programming or making changes in blind mode during a show.
This chapter also has a section on linking the console to an external full version of Capture.
To open the visualiser, select Capture Visualiser from the Open Workspace Window menu.
Always pre-program using palettes, because things never quite line up the same in a visualiser as they do in the real world. Using palettes means that you just need to reprogram the palettes when you get onto the real rig, rather than having to change lots of cues separately.