Managing forum posts
You or your forum members can add image captions and metadata. You can also turn an image into a link.
Tip:
Forum admins cannot customize images uploaded by other forum members.
To customize image settings:
Go to the forum in your live site.
Click the More Actions icon
next to the relevant post.Click Edit Post.
Click the image in the post.
Click the Settings icon
.Enter a caption in the Image Caption field.
Enter alt text in the Alt text field.
Enter a web address (URL) in the Link field.
Enable or disable the Spoiler alert toggle.
Click Save.

