Manually add a VIP Administrator to the Symantec VIP Manager tenant for direct access.
The VIP Enterprise Gateway can be used to automatically sync administrators with the VIP Cloud. In situations where this is not possible, administrators can be manually added through VIP Manager.
Alternative:
You can create Administrators via REST APIs: See Creating a VIP administrator documentation for more info: https://techdocs.broadcom.com/us/en/symantec-security-software/identity-security/vip/cloud/vip-web-services-and-apis-v127046027-d2278e2328/VIP-REST-APIs/about-the-vip-administrator-management-apis-v134675606-d2297e1563/creating-a-vip-administrator-v134675669-d2297e2217.html
Note: You can now manually add administrators to Administrator groups by Accessing the Account > Manage Administrator Groups.
For more information refer VIP Manager Administrator instructions of forgot password