To require or unrequire validation of items, see the 'manage usergroups' section of your admin panel. This will handle validation of links, categories and comments. To set if you wish to validate new member reigstrations individually, see your settings page in the functionality subsection.

On your main administration page you are presented with a list of all items pending validation. Check off boxes and then choose to approve or reject the items as you desire.

To send a custom rejection with a special reason listed, click the 'custom reject' option below the link in the list.

If you need to edit a link before approving it, just click the edit link below it and fix it up, then come back and approve it later.

Note that emails are automatically sent to the submitter on approval or rejection. These emails are defined in your language section under 'emails'.