New threads can only be created by Mentors (or Moderators as they are also known as). Subscribers can always interact on the thread created if they have any queries, suggestions etc. This is to make sure that only targeted content gets posted as new thread.
All new threads in this forum will go into Moderation so will not be immediately visible. Moderators will then take a call. It may be activated in this forum, or moved to another forum if not fit to be in this forum. Replies to existing threads will be visible immediately.