How to create a contact list from a list of email addresses in new outlook?

In previous versions of Outlook I have been able to use a comma-separated list of email addresses to populate a contact group. Now in the “nEw oUtlOOk” as of 2025, I am unsure how to do this. From the documentation it appears it is not possible to add large numbers of addresses to a “contact list,” which is MS’ new terminology for a contact group. It must be done by entering the addresses one at a time. Am I missing something?