Open Communications Server Control Panel.

In the left navigation bar, click Conferencing.

On the Conferencing Policy tab, click New, and then click User policy.

In the New Conferencing Policy dialog box, in Name, type the policy name.

(Optional) To modify the default policy settings, do any of the following:

• By default, the maximum meeting size is 200. To make the maximum meeting size more or less than 200, in Maximum meeting size, type the maximum number of users that you want to allow at a meeting.
  
  
• By default, users can invite anonymous users to meetings. Anonymous users are users who do not have credentials in your organization’s Active Directory Domain Services and therefore are not authenticated. To prevent users from inviting anonymous users to meetings, clear the Allow users to invite anonymous users check box.
  
  
• By default, users are prevented from recording meetings. To allow users to record meetings, in Recording, click Enable recording, and then select or clear the Allow external users to record meetings check box, depending on your preference.
  
  
• By default, audio and video is enabled for meetings. To prevent the use of audio and/or video, in Audio/video, do one of the following:
  
  
  • To allow the use of audio but not video, click Enable IP audio.
    
    
  • To prevent use of audio and video, click None.
    
    
• If you are enabling audio, do any of the following:
  
  
  • By default, if audio is enabled, users can dial in to meetings by using the public switched telephone network (PSTN). To prevent the use of PSTN for dialing in, clear the Enable PSTN conference dial-in check box.
    
    
  • By default, if audio is enabled, anonymous users cannot dial out dialing out from meetings. To allow anonymous users to dial out, select the Allow anonymous users to dial out check box.
    
    
• By default, the maximum video resolution is 640*480(VGA). To change the maximum video resolution, in Maximum video resolution allowed for conferencing, click the setting that you want to use.
  
  
• By default, data collaboration is allowed. To prevent data collaboration, in Data collaboration, click None.
  
  
• If you are allowing data collaboration, do the following:
  
  
  • By default, external users can download content. To prevent external downloads, clear the Allow external users to download content check box.
    
    
  • By default, users can transfer files. To prevent file transfers, clear the Allow users to transfer files check box.
    
    
  • By default, peer-to-peer transfers are allowed. To prevent peer-to-peer transfers, clear the Allow users to transfer files using peer-to-peer check box.
    
    
  • By default, annotations are allowed. To prevent the use of annotations, clear the Enable the use of annotations check box.
    
    
• By default, users can schedule meetings by using application sharing. To prevent the use of application sharing for scheduling meetings, clear the Allow users to schedule meetings with application sharing check box.
  
  
• If you are allowing users to schedule meetings with application sharing, by default, application and desktop sharing are both allowed. To prevent application and/or desktop sharing, do one of the following:
  
  
  • To allow application sharing but not desktop sharing, click Enable application sharing for users.
    
    
  • To prevent application and desktop sharing, click Disable application and desktop sharing for users.
    
    
• If you are allowing application sharing, by default, users can take control of the sharing. To prevent users from taking control, clear the Allow users to take control check box.
  
  
• If you allow users to take control of the sharing, then, by default, external users cannot control shared applications. To allow external users to control shared applications, select the Allow external users to control shared applications check box.
  
  

Click Commit.

Open Communications Server Control Panel.

In the left navigation bar, click Conferencing.

On the Conferencing Policy tab, click the policy that you want to make changes to, click Edit, and then click Modify.

In the Edit Conferencing Policy dialog box, modify any of the policy settings, except for the policy name, which cannot be modified.

Click Commit.