You would create a new virtual machine and set it to be a scanner only. Then you can join it to the control center you currently have. It will then get all of its settings from the control center and in turn provide all of its logs to the control center. Then you simply continue to access the control center and run reports and make settings changes as needed for both scanners.
Please refer to the install guide for ther exact steps to take:
http://clientui-kb.symantec.com/resources/sites/BUSINESS/content/staging/DOCUMENTATION/3000/DOC3742/en_US/1.0/smg_installation_guide.pdf