If "Admin" isn't desirable, then you can assign any other pre-defined role to the user e.g. vpxuser or dcui. For details, refer: https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.security.doc/GUID-2215AADC-D4CD-49D...
To check existing users and their permissions:-
# esxcli system account list
# esxcli system permission list
To modify permission for any existing user:
# esxcli system permission set -id <username> -r <role>
E.g. # esxcli system permission set -id jack -r dcui
Thank you!
Vikramaditya J