# Optimization Settings

Using **Optimization** settings, you can limit the virtual machine resource usage.

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**Note:** The **Optimization** pane is available in Parallels Desktop for Mac Pro and Business Editions only. It is not available in the App Store edition of Parallels Desktop. For more information on the differences between the Standard and App Store editions, follow this [link](https://kb.parallels.com/123796).
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To access **Optimization** settings:

1. Do one of the following:
   * Click the Parallels Desktop icon in the menu bar and choose **Configure.**
   * If the Parallels Desktop menu bar is visible at the top of the screen, choose **Actions** > **Configure**.
2. Click **Options** and select **Optimization**.

<figure><img src="https://content.gitbook.com/content/q6ZB3X3K5enPA8uzi8rL/blobs/dxDy36llhkgVUeV6rPew/Screenshot%202024-01-18%20at%2021.52.43.png" alt="" width="563"><figcaption></figcaption></figure>

If your Mac lacks resources for running two or more virtual machines at a time, you can manually allocate more resources to the machine that is more important for you. Drag the slider between **Low**, **Medium**, and **No limit** points. If you change this setting and don't like how Windows is performing, try a different setting.
