Hi Sanjay,
View a list of people who are attending your meeting
If you are the host and have required attendee registration for your event, you can view and manage the status of each meeting participant’s registration. Learn more about creating a meeting where attendee registration is required.
To manage registration, click the View Registration Info link on the Details tab of your event. This link
only appears when registration is required. On this page you can manage registrants by selecting them and then clicking the Accept or Reject buttons.
Also see WebEx meeting reports down the page.
Reference - WebEx Meeting
Thanks and Regards,
Geevarghese