Is it possible to display images directly on the forum.
Instead of a url?
Yes, it's possible. You should put a small code in the functions.php file of your theme explained in this topic: https://wpforo.com/community/how-to-and-troubleshooting-2/uploading-and-embedding-images/#post-5212
For an advanced file attachments options you I'd also suggest wpForo Advanced Attachment addon.
Thank you very much.
I'm going to try, with my bad English
I have placed it in; wp-content ► themes ► jolene ► functions.php
It does not want to work.
What am I doing wrong?
Yes, it worked, it works
Thank you very much