Site administrators in Cisco Webex Control Hub can enable the Multimedia Viewer feature so that users can share websites during a Webex meeting.
Presenters on your site can use the Multimedia Viewer to share web-based multimedia in meetings, events, and training sessions. You can enable or disable this feature for your site.
From the customer view in https://admin.webex.com, go to Services.
Under Meeting, select Sites, choose your site, and then select Configure Site.
Under Common Settings, select Site Options, and then check the Allow Multimedia sharing check box.