Add vCenter Single Sign-On Users

Log in to the vSphere Web Client as administrator@vsphere.local

The password is what you defined for your original user.

http://pubs.vmware.com/vsphere-55/index.jsp?topic=%2Fcom.vmware.vsphere.security.doc%2FGUID-72BFF98C-C530-4C50-BF31-B5779D2A4BBB.html