The action submenu in extension will show if you have queues defined, or emails defined for the button.. The options it will add are to send email, add extension to queue XXX, remove extension from queue XXX, pause member, etc. If you do not have any queue buttons in view, and no email set, it will not show. For the action submenu tu work you must have fop2.js version 2.11.
On trunk and queue buttons de action submenu changes behaviour, it lets you pick up calls when clicking a waiting call or a trunk detail call.
If you can give me access to your install I can take a look at it, try to catch me online to work on it.
Best regards,