Pre-Register Guests - Not appearing as an option

Any tips on activating the "Pre-register Guests" option for the panel to appear? Since it appears to be a "new-ish" feature based on the Support info, wondering how to access.

https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0058152

Subscribed to a package that would provide, but it's not showing up