Create new App Registration

Log in with Admin credentials to azure.microsoft.com and open up App Registrations page:

Create new App by clicking New Registration button:

Give your app a name and click Register:

Write down the following details, you will need them later

From the menu on the left select Certificates & Secrets and then New Client Secret:

Give the secret a description and set up expiration date, then click Add:

Write down Secret Value, you will need it later:

The App has been created and is ready to add required permissions:

Select API permissions from the left menu, then click Add a permission: