Zoom offers an add-on feature called "Webinar" that offers slightly different capabilities from "Meeting."
For instance, in "Webinar" only the host and designated "Panelists" can share video and audio, with all other participants limited to participating via the text-based "Question and Answer" feature. Questions entered into "Q&A" can be seen by the host and panelists, who may choose to respond in a number of ways. By its nature, this format is more secured against disruptions and intrusions from "Zoombombers."
A full breakdown of the difference between "Meeting" and "Webinar" is available in the Zoom Knowledge Base.
Please note that Webinar is not part of the standard VCU Zoom user plan. Most users will not have the ability to access it, and the "Webinar" tab on their account page will just show a "sales pitch" for the feature. "Webinar" can be purchased as an annual subscription using a departmental budget code via the online form at mssvideo.vcu.edu/webinar.
Also, Technology Services owns a single 1000-seat Webinar license that can be leased out to departments on a per-event basis for a nominal fee. This typically involves a two-day lease to cover the actual event plus time to practice and learn the features. If interested, please contact firstname.lastname@example.org for details.