Hi,
The easiest way to see a  softproof is to hover the mouse over a thumbnail, press Control & Space Bar. That will give a full screen soft proof. Press space bar to toggle soft proof on and off.The profile data can be seen in the bar at the top of the screen.
There is also a soft proof button in the Page Editor.
This can be used when an image does not have the correct profile associated with it, or none at all.You do need to know what the correct colour space of the image is of course.
Terry

It is in the Help under Contents, Functions, Soft Proofing. It can be found with the search there  too. After the initial search and "display", place your cursor in the text on the right and use CTRL F to find the detail.
There used to be pdf manual but I can't find it on the web site under Ultimate. There is an old one here: http://www.ddisoftware.com/qimage/pdf/qimage2009.pdf
Don't forget the learning videos for QU here: http://www.ddisoftware.com/qimage-u/learn.htm
Terry