⁠Help for Dynamic View, do "Shared Users" need a SmartSheet login


With a Dynamic View, do "Shared Users" need a Smartsheet login, or do they need to have previously logged in to Smartsheet before they can access a Dynamic View?

I am not able to add several emails to the Shared User field under the Sharing tab. (but other emails can be entered).

If this is a limitation, is there a way around it. I have a large group of individuals I would like to share an intake form with and most have never logged into Smartsheet previously.