I'm not sure how to answer this but for this we'd need to look these all up at KDE.org. Maybe they have been removed or maybe they are employed in another way. I don't think it is a PCLOS issue. We can only provide what is in fact provided to us.
Archie had a good idea, so I looked with ixquick search and found this on the kde forum page (a workaround).
By the way, did you know that you can use your pager (the widget which shows your virtual desktops) to show your desktop? Right click on pager -> Pager Settings -> Selecting current desktop: Shows desktop.
So I tried it, and when pressing  my windows close, cool beans.....
For a minute there, you just sounded like a long-time friend who always says, cool beans ...
Anyway, if you want another trick ... which depends on how many virtual desktops you have ... there's usually 4 ... you could actually move your windows around similar to right-clicking on a window's titlebar > Move To Desktop.
On your current desktop, it is easy to move your applications to another virtual desktop. But how about moving an application from another virtual desktop to another or even to your current desktop?
You need to have Display icons ticked on Pager Settings and make sure you panel height is tall enough to actually show the icons.
Click a representation of an icon on your pager and drag it around. This moves the application.
For example, I am currently working on virtual desktop 1 and I needed to see some text I wrote on Kwrite which I left on virtual desktop 3. An alternative would be just to drag the Kwrite representation to virtual desktop 1 and I have Kwrite with my notes where I am doing my task.
O course it is easy enough to just click virtual desktop 3 and view your notes then click virtual desktop 1 to return to your workspace, especially if you have you switching set to Desktop Cube Animation ... but it is the several ways we can do things that is truly the trick that does it for us.
Have fun, says Neal!