Good evening Johnni and welcome back!
Thank you for reaching out to us with this question and for the kind words on the RSVP functionality.
We will gladly try to assist you on this topic.
Can one person register multiple people and add their data? Meaning, I go in and register 5 people. Can I then add the people I register Names, Emails and Phone numbers?
At the current time, unfortunately the answer is no. Unless you hire one of our recommended customizers or if you feel that you can tackle this on your own reading our read our Themer’s guide as a starting point.
You can also suggest it or cast your vote on other features in our User Voice forum.
Let me know if that helps.
Have a great evenng!
Geoff B.