In our Q2A site, all the green quesitions (i.e., where best answer has been selected) are close — one cannot add another answer to them. I don't want this.
On this very site (question2answer.org/qa/), all the green excepted answers are open for additional / further answers.
Where can I find the setting that leaves green answers open as described above?
(PS: we are running 'Snow Theme'. )