I only know how to do one.
The first one.
If you go to File - Preferences - General Tab - Allow negative real values in the Object Editor, that should allow you to do it. At least in most cases.
"With the first link, the chain is forged. The first speech censured, the first thought forbidden, the first freedom denied, chains us all irrevocably."
Unfortunately, that doesn't seem to do it for me. I have that option already enabled, but I can't actually enter a negative value. It just sets the value to 0 (or the lowest possible value).