How to create multiple Veritas Alta Archiving applications (Personal, Discovery and Manage) in Azure AD for Single Sign-On
1) Create 3 enterprise non-gallery applications:

2) Configure Veritas Alta Archiving Personal Archive application by following the standard steps of SSO configuration:-
3) Configure Veritas Alta eDiscovery application using the below steps:
-> Click on the application in enterprise apps.

-> Select Set up single sign on.

-> Select Linked.

-> Enter the sign on URL that was generated for PA, only replacing the word "personal" with "discovery" in the URL. Click save.

4) For Manage, follow the same exact steps mentioned above for DA, this time only replacing personal with manage in the final URL.
5) Having followed all the steps above, user would be able to see and launch PA, VAD and Manage from Office365 -> All Apps