When embedding a Samba Live meeting with an iframe, is there any way to pre-populate the nickname field or skip the name & password section (bypassing these to the URL?)

The best way ultimately to do this is with our API. You would be able to add each user to a session and then get back that user's personal join link. You then render that link in an iframe on your website.

Note: for shared OEM and OEM licenses, we offer the option of URL parameters. Contact our Sales Team for more information.