How can reorder and hide the apps and models in Django admin

You can reorder and hide the apps and models in admin pages.

For example, there are the same 3 models in cms/models.py as shown below:

# "cms/models.py

from django.db import models

class Page(models.Model):
   pass

class PageSection(models.Model):
    pass
class Seo(models.Model):
   pass

Then, there are the same 3 admins in app1/admin.py and app2/admin.py as shown below:

# "cms/admin.py

from django.contrib import admin
from .models import Page, PageSection, Seo

class PageAdmin(admin.ModelAdmin):
    pass

class PageSectionAdmin(admin.ModelAdmin):
    pass

class SeoAdmin(admin.ModelAdmin):
    pass

admin.site.register(Page,PageAdmin)
admin.site.register(PageSection,PageSectionAdmin)
admin.site.register(Seo,SeoAdmin)

Then, apps including AUTHENTICATION AND AUTHORIZATION(auth) are displayed in Home admin page

Now, set ADMIN_ORDERING and treat it in overridden get_app_list() in settings.py as shown below. *You can see the original get_app_list() in GitHub:

# "core/settings.py"

from django.contrib import admin

ADMIN_ORDERING = (
    ('cms', (
        'Page',
        'PageSection',
        'Seo'
    )),
    ('auth', (
        'User','Group'
    ))
)

def get_app_list(self, request, app_label=None):
    app_dict = self._build_app_dict(request, app_label)
    if not app_dict:
        return
        
    NEW_ADMIN_ORDERING = []
    if app_label:
        for ao in ADMIN_ORDERING:
            if ao[0] == app_label:
                NEW_ADMIN_ORDERING.append(ao)
                break
    
    if not app_label:
        for app_key in list(app_dict.keys()):
            if not any(app_key in ao_app for ao_app in ADMIN_ORDERING):
                app_dict.pop(app_key)
    
    app_list = sorted(
        app_dict.values(), 
        key=lambda x: [ao[0] for ao in ADMIN_ORDERING].index(x['app_label'])
    )
     
    for app, ao in zip(app_list, NEW_ADMIN_ORDERING or ADMIN_ORDERING):
        if app['app_label'] == ao[0]:
            for model in list(app['models']):
                if not model['object_name'] in ao[1]:
                    app['models'].remove(model)
        app['models'].sort(key=lambda x: ao[1].index(x['object_name']))
    return app_list

admin.AdminSite.get_app_list = get_app_list

Then, the order of  apps and the models is changed in Home admin page. The order of them is also changed in other admin pages not just in Home admin page: