To create an enterprise application in Azure Active Directory:
In the Azure Portal, go to Azure Active Directory -> Enterprise Applications there on “New Application”.
Here you can either select an existing one from the gallery or add your own app. In this case, we’ll add a new one.
Then the configuration window for the new Enterprise Application opens.
Under Properties, the name can still be changed and a logo can be uploaded.
Under Users and Groups, individual users or previously created groups can be authorized. Select the group and click Update Credentials to enter the credentials.
Under Single sign-on, enter the login page of the web service.
That was the actual configuration in Azure Active Directory.
In order for the whole thing to be usable, the Extension My Apps Secure Sign must be installed in the browser.
If you now go to the login page of the web service with the browser, then an icon appears in the browser or click on the icon the first time and select the shared Enterprise app. You no longer need to enter access data and will be logged in.