Hi,
There are 2 steps to creating discussions. The first is to create a "forum" within which users can create discussion topics.
The first step of creating a forum is an option only available to administrators. Once created a regular member can create threads or discussions within that forum without any extra permissions as can be seen here:
http://cambridgeopensystems.com/documentation/applications/discussions/
The reason we set up the system this way is to allow the administrator to create some structure to the discussions area and then allow users to contribute discussion topics.
I hope this helps.
Regards,
Rob Denison.
Cambridge Open Systems' Support Team.