Check out this option:
[-chown-mode {restricted|unrestricted|use-export-policy}]
Vserver Change Ownership Mode (privilege: advanced)
This optional parameter specifies whether file ownership can be changed only by the superuser, or if a non-root user can also change file ownership. If you set this parameter to restricted, file ownership can be changed only by the superuser, even though the on-disk permissions allow a non-root user to change file ownership. If you set this parameter to unrestricted, file ownership can be changed by the superuser and by the non-root user, depending upon the access granted by on-disk permissions. If you set this parameter to use-export-policy, file ownership can be changed in accordance with the relevant export rules.