How to create super user

[ider]

I will create a custom user attribute but permission is denied because I can’t create a superuser. How to create superuser & policy?

[cornelinux]

Read this
https://privacyidea.readthedocs.io/en/latest/policies/admin.html

and that
https://privacyidea.readthedocs.io/en/latest/faq/admins.html