<filename>app/grandchallenge/registrations/admin.py
from django.contrib import admin

from grandchallenge.registrations.models import OctObsRegistration

admin.site.register(OctObsRegistration)

<filename>app/grandchallenge/registrations/admin.py
from django.contrib import admin

from grandchallenge.registrations.models import OctObsRegistration

admin.site.register(OctObsRegistration)
