> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/boomerang-3-calibration-app-manual/calibration-app/certificates.md).

# Certificates

The Certificates link on top opens the directory where the Cal App saves the certificates. It saves only the certificates which are issued. If a calibration is discarded, the certificate is removed from the directory.

<figure><img src="/files/bxBkjk5Kcb0fokyqHzEk" alt="" width="419"><figcaption></figcaption></figure>

After the installation, user shall click Certificates link and then click "USE THIS FOLDER" at the bottom to give the app rights to use it.

<figure><img src="/files/0Rw7k1vPUqPQX8d8sGrH" alt="" width="422"><figcaption></figcaption></figure>

The message will be displayed:

<figure><img src="/files/YZ2EKWUwhX1hWycrAFMq" alt="" width="286"><figcaption></figcaption></figure>

Click "ALLOW".

The Certificates directory will be shown afterwards.

<figure><img src="/files/V0O6tzxHSjRhzsNGbTdU" alt="" width="416"><figcaption></figcaption></figure>

To go back to the Cal App, select it from the active tasks. The Back button in this case will navigate in the File Explorer and will not let you to go back to the Cal App.


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