One of the two or three apps I use most of all, and am lost without, is what Gnome2 called a workspace-switcher. Some desktops, including what seems to be xfce4, call it a "pager"; but I can't seem to add it again. I need to add 18 of it.)
Eighteen together show an array of what might almost be check- boxes in a panel, each with a number. Until you do something, a click in any box gives you a fresh clean desktop. You launch (say) Firefox in (say) box 2; gnome-terminal in box 1; Konqueror in box 10; Opera in box 11; a GUI of your home folder in box 8; Pan in box 9; etc.
From then on, across logouts and reboots, either by shutdowns with apps still open, or by remembering and relaunching, you can reach a point, quickly and easily, where your fingers and eyeballs know, without conscious thought to distract you, what to do to set up whatever you want to do next.
I managed to get (what I think is) xfce4 desktop set up with this invaluable app -- but it showed on two panels, and I wanted that part of one of them back to do something else with.
I couldn't find anything in Mageia's settings to let me delete that app from one panel. So I went at it, removing one desktop (id est one of those little checkboxes) at a time, till the top panel was free. THEN I noticed that I had also been removing them from the bottom panel!
How do I get them back??
If I click "add widgets" and start typing into the search box, it shows me an icon (just like the one for clearing the desktop) -- but I can't get it to let me add seventeen more of them. In fact, I can't even find a way to add one.
All this is easy in Fedora-xfce4, and I can't imagine why not also in Mageia. (I am also asking on the list for it.)