Using / Setup og_forum module

Used to create forums in groups. these forums are specific for groups.
1. Install/Enable og and og_forum modules
2. Go to Administer->Organic groups->Organic Groups Forums
3. Write Default forum name.
4. Save the changes.
5. Login with a user who is subscribed to a group
6. Go to Create Content->Forum Topic
7. Fill in the form and select the Forums from dropdown list.
8. Press Submit button