How to display a Completion Date as a column in Library

[qigongdoctor]

Hi - Can anyone tell me how to display the Moving Completion Date as one of the columns in "library"?

I'd like to be able to see when (the date) downloads were completed and moved into my selected folder.

Thanks in advance.
"Doc"

[Hobbitfood]

Hi Doc.
If you right click in empty grey area on menu bar, you get a list of things that can go on as a column in Library.
Hobbitfood

[Hobbitfood]

Hi Doc.
Made a mistake in my earlier reply. You right click in the column heading bar, get a list that also gives another 53 options. Don't put all of them on!!!
Hobbitfood