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On the left, click on Certificates & secrets
Click on New client secret
Fill in the Description. It can be anything you like but I recommend you mention OnLink where the secret is going to be used.
Select Never from the Expiration section. Nothing is more annoying than when your app stops working because your client secret has expiredSet an Expiration date.
Press Add and copy the Value to a safe place (preferably Azure Key Vault). It is a password, so handle it with care. Copying the key value now is important because after you close the view, you won’t be able to see the key value again. If you lose the secret, you have to create a new one.
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