Can users edit content from the front end?

Yes, if they are registered users who are logged into the system, and if you have given them permission. There are three user levels which have this power: Author - This group allows a user to post content, usually via a link in the User Menu. Editor - This group allows a user to post and edit any content item from the Front-end. Publisher - This group allows a user to post, edit and publish any content item from the Front-end.