By default, when a BlackBerry® device user creates a meeting request , the BlackBerry device user can check to see if a potential participant is available. You can turn this feature off if you want to minimize the resource impact of the BlackBerry® Enterprise Server on your organization's messaging server.

1. In the BlackBerry Administration Service, on the Servers and components menu, expand BlackBerry Solution topology > BlackBerry Domain > Component View > Email.
2. Click the name of the BlackBerry Enterprise Server instance or BlackBerry Enterprise Server pair that you want to change.
3. Click Edit instance.
4. On the Messaging tab, in the Messaging Options section, change Free busy lookup turn on to False.
5. Click Save All.
6. Restart the BlackBerry Enterprise Server using one of the following methods:
   • If you want to change a BlackBerry Enterprise Server instance, on the Instance information tab, click Restart instance.
   • If you want to change a BlackBerry Enterprise Server pair, click one of the instances, and on the Instance information tab, click Restart instance. Repeat this step for the other instance in the pair.
   • In the Windows® Services, restart the BlackBerry Dispatcher.
7. Repeat step 2 to step 6 for each BlackBerry Enterprise Server instance that you want to turn off the feature for.

You can prevent BlackBerry® device users from searching with their devices for remote email messages that are located on the messaging server.

1. In the BlackBerry Administration Service, on the Servers and components menu, expand BlackBerry Solution topology > BlackBerry Domain > Component view > Email.
2. Click the name of the BlackBerry Messaging Agent instance that you want to prevent a device user from searching for remote email messages.
3. Click Edit instance.
4. On the Messaging tab, in the Messaging options section, in the Remote search turned on drop-down list, click False.
5. Click Save all.
6. On the Servers and components menu, expand BlackBerry Solution topology > BlackBerry Domain > Component view > BlackBerry Enterprise Server.
7. Click the name of the BlackBerry® Enterprise Server instance or BlackBerry Enterprise Server pair that is associated with the email instance that you want to prevent a device user from searching for remote email messages.
8. Restart the BlackBerry Enterprise Server using one of the following methods:
   • If you are changing a BlackBerry Enterprise Server instance, in the Status list, click Restart instance.
   • If you are changing a BlackBerry Enterprise Server pair, in the Status list for one of the instances in the pair, click Restart instance. Repeat this step for the other instance in the pair.
   • In the Windows® Services, restart the BlackBerry Dispatcher.
9. Repeat step 2 to step 8 for each BlackBerry Messaging Agent instance that you want to turn off remote searching for.