Hi Vijay,
Administrators who fully authorized to manage a site can modify the site rights of other administrators and limited administrators, though they cannot modify the site rights for themselves. System administrators must modify site privileges for administrators who are fully authorized to manage a site.
Limited administrators cannot change the site rights of administrators. Limited administrators can change the site rights of other limited administrators with equal or less restrictive site privileges.
Check below articles,
Configuring the access rights for a limited administrator:
http://www.symantec.com/docs/HOWTO55037
About access rights:
http://www.symantec.com/docs/HOWTO55041
Adding an administrator account:
http://www.symantec.com/docs/HOWTO55403
By default, limited administrators do not have any access rights. You must explicitly configure reporting rights, group rights, command rights, site rights, installation package rights, and policy rights for this type of administrator.