Step-1: Create Azure Active Directory app.
To manage an Azure Active Directory (AAD) app and create a client secret, the Active Directory administrator role is required
Steps to Create an Application
Click on Menu
Go to Azure Active directory

Click on App Registration

Click on New Registration

Enter Name of Application
Supported account type is selected automatically.
Click on Register

App will get created as shown below.

Capture the Application ID & Directory ID to share with your partner
Steps to add client secret
Click on Certificates & Secrets
Click on New Client Secret
Enter Description
Select Expires as 24 months maximum
Click Add

Applied client secret will be displayed as shown below

Capture the Value(not Secret ID) to share with your partner
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