To create a Dimdim activity:

1. Go to the course where you'd like to have the Dimdim activity.
2. On the course page, click "Turn editing on".
   
3. Add an activity and choose Dimdim Web Meeting.
   
4. Fill up the necessary info and settings for the Dimdim Web Meeting activity.

Starting a Web meeting.

1. On the course page, choose the Dimdim activity, then click "Click here to Start Meeting".
2. If an enrollment key is asked, type the enrollment key.  On SG.net Test Course, it's item!flowe
3. It will redirect you to the Dimdim server.
4. If you're the host of the meeting, choose "Start Meeting".  If you're a participant, choose "Join Meeting".
   
5. When starting a meeting, you need to specify a Room Name which you need to inform the other participants so they can enter that particular room.
   
6. It will also ask you if you'll allow Camera and Microphone access.
   
7. Once the meeting commences, the host will have options to choose from, like doing a whiteboard, share documents, or display web pages.