Create Post Excerpt from Textarea

In WordPress it is possible to create a post excerpt during post creation. If the excerpted is not entered, it will be generated automatically. 

You can use the textarea form element to ask your users to enter the post excerpt. The slug of the textarea needs to be  set to "post_excerpt". Thats all needed. BuddyForms is looking for this slug and will use the form element for the post excerpt without any further steps needed.

Please make sure to use the form element slug "post_excerpt" only once. Otherwise the excerpts get overwritten by the second form element.