Moderate comments on FB community page wall

I want moderated comments on a post by admin on a community page. E.g. only admin can post on the wall (this is in the settings, no probes) but fans’ comment must be moderated.

  1. Have a community Page on Facebook
  2. Only Admin can post on the wall (can be done through settings)
  3. Fans can Post comments on Admin Post but they are not published immediately.
  4. Moderate comments and post the select ones.

Kindly help

What code have you written so far?

Nothing so far, but I know how to write a basic FB app.