Change chat settings for individual meetings BEFORE they start

I schedule several different types of meetings - some that we want participants to chat with everyone and some where we want participants to only chat with the host/co-host. It would be helpful to edit this setting for meetings as they're scheduled rather than the current options of a.) changing the global setting every time I need to schedule a meeting or b.) changing the setting after the meeting starts. Is there really no workaround for this?