no header displayed. Goal custom header

[AliVleotsky]

I have installed jazzmin for my django application. All is working fine except the header.

here is the settings I am using.

Jazzmin admin theme settings (customize as needed)

JAZZMIN_SETTINGS = {
"SITE_TITLE": "Dose Admin",
"SITE_HEADER": "Dose Admin Portal",
"SITE_BRAND": "DoseSaaS",
"WELCOME_SIGN": "Welcome to DoseSaaS Admin",
"copyright": "DoseSaaS 2025",
"show_ui_builder": True,
# Example: set a custom logo (put your logo in static directory)
# "site_logo": "img/dose_logo.png",
# Example: set a custom favicon
# "site_icon": "img/favicon.ico",
# Example: set a custom color theme
"PRIMARY_COLOR": "#007bff",
"SECONDARY_COLOR": "#6c757d",
"topmenu_links": [

    # Url that gets reversed (Permissions can be added)
    {"name": "Main",  "url": "/dose/", "permissions": ["auth.view_user"]},

    # external url that opens in a new window (Permissions can be added)
    {"name": "Support", "url": "https://github.com/farridav/django-jazzmin/issues", "new_window": True},

    # model admin to link to (Permissions checked against model)
    {"model": "auth.User"},

],
# More options: https://django-jazzmin.readthedocs.io/en/latest/configuration/

}
and my templates section of settings.

TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [
os.path.join(BASE_DIR, 'dose', 'templates'),
os.path.join(BASE_DIR, 'templates'),
],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
'mysite.custom_context_processors.tenant_theme_context',
'dose.context_processors.tenant_context',
],

    },
},

]
jazzmin is at the top of the INSTALLED_APPS

I have tried creatng base.html and base_site.html to create a custom header in arious blocks, but no luck. removing or renaming base.html and base_site.html so jazzmin rerts to the package versions.

According to the docs the setting "SITE_HEADER": "Dose Admin Portal", is all that is needed to turn on the header, but no luck.

my goal is to create a custom header with some branding, and some other things I had in my header before installing jazzmin.

[AliVleotsky]

tried overriding bse_site.html to populate the nav-global block as follows but no luck there either

{% extends "admin/base.html" %}

{% block nav-global %}

Custom Admin Header

{{ block.super }} {% endblock %}