Chat functions in Webinars- Presenters only?

I'm planning to host a webinar and will disable the chat for participants, relying on the Q&A function for questions.  I wondered if there was a setting where presenters can use the chat as a "one-way communication" with participants?  I will have 300+ participants and didn't want the chat going but my presenters would like to share a link to a survey with their audience at the end of the session (without receiving responses back or fielding side conversations).  Thanks for advice!