Reading panel - Additional Actions

A

Andre

Outlook 2003 SP2
In the reading panel, when I click in the right button of the mouse in a
contact, it appears a menu box with several information and options (User
Online, Schedule Meeting, Office Location
One of the options is 'Additional Actions'. But when I move the mouse over
this option, the box is empty (No additional actions found).

How can I create actions in order to appear in this option ?
 
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