Why Do My Computer Monitor and Projector Look the Same When On Air?

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Proclaim supports multiple outputs so you can display different content on each display while On Air. If your computer monitor and projector look identical when you go On Air, follow these directions to fix the problem.

Note: For more questions about configuring your display outputs, click here.

1. Set Your Computer to Extend Displays

Ensure your computer views your projector as extended.


  • Go to your Display Settings (Settings > Display).
  • Ensure Multiple displays is set to Extend these displays (view Windows support help).

    windows system display settings


  • Go to your Display Arrangement Settings (System Preferences > Displays > Arrangement).
  • Ensure Mirror displays is not checked (view Apple support help).

    macOS Display arrangement settings

2. Set Your Computer Output to "Not Used" in Proclaim

Proclaim distributes your various output feeds as Virtual Screens. You can set your screens up in the Display settings in Proclaim (click the Settings menu and choose Display).

Open display settings in proclaim

In the lower section, Outputs, your computer running Proclaim includes “(Application)” following the display name.

Set your computer running Proclaim to Not Used.

Set computer output to Not Used

Note: If you need help identifying your outputs, click Identify. The numbers in the monitors list in Proclaim correspond to the large numbers shown on your connected monitors. Deselect Identity to remove them.

Setting your computer monitor output to “Not used” allows you to view the Proclaim application and interact with your presentation while On Air. Set at least one output to show your slides. If you have only your computer and a single, congregation-facing projector attached, your set up should look like the image below.

One computer and one project setup

Note: If you only have two inputs (like above) and you change the second monitor to something other than “Slides,” your computer's monitor will automatically show the slides and you won't be able to interact with your presentation while On Air.

3. Test your setup.

Test your settings before your service by going On Air.

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