Hi Rafael,
This community is for Cisco WebEx Meetings Server and Cisco Unified MeetingPlace products and is not observed by WebEx SaaS experts.
I would advise working with your Cisco Account Team to provide you with information about WebEx Meeting Center license, or call into WebEx SaaS Support, reference your WebEx Site for getting support on this one.
I hope this will get you the answers you need faster.
Kind regards,
-Dejan