For example, either U6/U7 who has not played before or new in 2024/2025 and not registered

Please follow the instructions on the RFU help site here to create your parent account:
https://www.englandrugby.com//b60e6e31-e1cd-4d88-a268-4b6e76fb6593/dxdam/51/51a6db4b-a275-4de1-ada4-b12cde9efd38/AgeGradeRegistrationsStepbyStepGuideforParents.pdf

Using the link below to create your account - starting with yourself and then adding your child later in the process:
[url=https://gms.rfu.com/GMS/CreateAccount?qs=MtsU15xYpdQ51rUIk28%2bzb3kH1rKMVDbesIXB%2fdqviI%3d[/url]

Once created look out for the email verification link that will be sent to you and click on the link to confirm your email address.

As part of the process, register them as players - ensuring you complete all fields including emergency contacts and medical information, even if the answer is N/A.