When visiting a discussion activity, an activity may require you to add a new discussion thread of your own, or it may allow you to simply read and reply to your colleagues' discussion threads, in order to complete the activity. Read the activity instructions to find out the requirements for each activity. 

To add your own discussion thread (or topic), click the 'Add a new discussion' button. Type your message and then press the 'Post to forum' button. 

To reply to another person's message, simply click the 'Reply' link beneath their discussion post. Type your message and then press the 'Post to forum' button.  

If your post has been saved successfully, you will see a confirmation message that reads: 'Your post was successfully added. This activity has been marked as complete. You have 30 mins to edit it if you want to make any changes.'