Action.ShowOn (Outlook)

Returns or sets an OlActionShowOn constant representing the location where the action will be shown. Possible return values are olDontShow - Indicates that the action will not be displayed on the menu or toolbar, olMenu - Indicates that the action will be displayed as an available action on the menu, olMenuAndToolbar - Indicates that the action will be displayed as an available action on the menu and the toolbar.

Session.CreateSharingItem.Reply.Actions(1).ShowOn = olDontShow