I need some assistance changing a single select into a multiple select form drop-down. I am having issues with the multiple selections storing. The function loops through all of the users and assigns a drop-down where I can select the folder they have access to. I'm not having any luck trying to assign more than one folder to each user.
I have attached the Wordpress plugin that I am trying to update. The field that I need to be able to assign multiple folders to is under the "Folder Access" column on the "/wp-admin/users.php" page on the administrative side of Wordpress.