You can add a custom message to a meeting request by defining a transport rule on your Exchange Server 2010 or Exchange 2007 Hub Transport Server.

Every Lync 2010 meeting request contains a hidden text identifier, [!OC([1033])!]. In the Exchange Management Console on the Hub Transport Server, define a transport rule that searches for this identifier by using the option when the Subject field or the body of the message contains specific words. Then enter the custom text you want to be displayed.

For details, see “Transport Rule Actions” in the Exchange Server TechNet Library at one of the following locations:

• For Exchange 2010, see http://go.microsoft.com/fwlink/?LinkId=202494.
  
  
• For Exchange 2007, see http://go.microsoft.com/fwlink/?LinkId=202498.
  
  

You can change the access and presenter meeting options that are available to individuals or groups in your organization and the defaults for these options by configuring Lync Server 2010 in-band provisioning settings.

Note:
Configuring meeting options on the server does not change the options for meetings that are already scheduled. Changes made to server settings can take up to three hours to affect all the clients on your network.

The Online Meeting Add-in for Lync 2010 defaults are best for quick scheduling of small-group collaboration and sharing sessions. However, you can change the default options to match the business and security needs of specific groups or sites in your organization.

The following tables describe the in-band server settings that control the state and availability of access and presenter meeting options, either when scheduling a meeting by using the Online Meeting Add-in for Lync 2010 or when changing meeting options during a Lync 2010 meeting. For details about Lync 2010 meeting options, see “Set meeting or conference call options” in the Lync 2010 Help and How-to at http://go.microsoft.com/fwlink/?LinkId=202493. For details about the in-band server settings, see New-CsConferencingPolicy and New-CsMeetingConfiguration in the Lync Server Management Shell documentation.

CSConferencingPolicy Meeting Option Parameters

CSMeetingConfiguration Meeting Option Parameters

Parameter	Default	Description
PstnCallersBypassLobby	True	If False, the access option People dialing in by phone bypass the lobby is unavailable.
DesignateAsPresenter	Company	The other settings are None and Everyone. If None, the presenter option Organizer only is the default. If Everyone, the presenter option Everyone including people outside my organization (there are no restrictions) is the default.
EnableAssignedConferenceType	True	If False, the creation of meetings that have a set conference ID specific to the organizer is disabled. If True, the same conference ID is used for every meeting where the organizer has not changed the default meeting options.
AssignedConferenceTypeByDefault	True	If False, each new meeting is given a unique meeting ID. Note: This parameter has no effect if EnableAssignedConferenceType is set to False.
AdmitAnonymousUsersByDefault	True	If False, the access option Everyone including people outside my company (no restrictions) is unavailable. This global setting is used if no specific conferencing policy has been created.

Meeting organizers can change the language of the meeting invitation to English, when a non-English or multiple-language version of Outlook is installed. If the organizer selects this option, all participants receive the meeting invitation in English. It is not possible to customize the language of the invitation based on the preference or installed language of the person who receives the invitation.