See Conference Options for detailed information about each option you can set. The forums you selected now appear in the main conference page. In a conference that consists of many forums, each of which consists of dozens of threads, the list of threads may be very long. To help you see what forums are available in a conference, you can collapse the list of threads in a forum in the main conference page. In the main conference page, or, if you are using the frames display, in the left frame, click the arrow button that is pointing downward next to the forum name.
Forums collapses the list of threads in the forum.
Click the arrow button that points to the right to expand the list of threads in the forum. Threads are topics and messages are all of the postings which collectively go together to make up a Thread. Threads are displayed under the particular Forum listed in the main Forums page. Messages are displayed when you click on a Thread title in the main Forums page.