select the finished jobs (click the first, then Shift+click the last), and use the Clear button

to your first issue: click the column header / column title words to sort the list, like in the Explorer.

okay?

- - - - - 

Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though