How do I add custom scripts to Outlook?

In Outlook go to Tools > Macro > visual Basic Editor

R-click on Project 1 and select Insert > Module

In Module1 add the following code:

Sub CustomMeetingRequestRule(Item As Outlook.MeetingItem)
    If Item.ReminderSet = False Then  
        Item.GetAssociatedAppointment(False).ReminderMinutesBeforeStart = 15 
    End If
End Sub

Click on Save

Make your rule and the script should appear as a selection when you click on the 'a script' link.

The code should perform what you were after in your other question but haven't tested it.

Reference link: http://support.microsoft.com/kb/306108


Scripts in Outlook are also known as macros. I believe Alt+F11 will bring up the VBA script editor for Outlook macros.