More info is needed to use this! Rated 1 out of 5 stars

how does this work?

I go to tools->addons->NEdit cookie->Options & i see nothing it just says just close or uninstall.

How can we use this thing?

Ether way
I have set dont accept cookies from websites. But I have some exceptions.
So I need to do this for specific sites: Always accept cookies from an exceptional site & delete those cookies after I close firefox.

Can Someone recommend an addon that can do this?
If this addon can do this explain how please.