diff --git a/docs/admin-guide/add-emergency-user.md b/docs/admin-guide/add-emergency-user.md
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+---
+myst:
+  html_meta:
+    "description": "How to add an emergency user to an existing Zope instance"
+    "property=og:description": "How to add an emergency user to an existing Zope instance"
+    "property=og:title": "Add an emergency user"
+    "keywords": "Plone 6, create, add, factory, distributions"
+---
+
+(add-an-emergency-user)=
+
+# How to add an emergency user
+
+This section explains how to add an emergency user to an existing Zope instance.
+
+It assumes that you have already {doc}`installed </install/index>` Plone.
+
+Some installation methods automatically create an emergency user for you already.
+
+The credentials for the emergency user are usually:
+
+- username: `admin`
+- password: `admin`
+
+Follow these instructions if you used an installation method that did not do this, or if you need to create a new emergency user for some reason.
+
+```{note}
+The emergency user is a superuser with full access to the Zope instance. It is not limited to a specific Plone site.
+```
+
+There are two ways to add an emergency user, depending on how your site was installed.
+
+## Add an emergency user via an instance script
+
+If your site was installed with `buildout`, you can add an emergency user via an instance script.
+
+Run in the terminal:
+
+```bash
+$ bin/instance adduser username password
+Created user: username
+```
+
+The name of the instance script might vary based on your installation.
+Replace `username` and `password` with the desired values.
+
+If the user already exists, no user will be created. The password will not be changed, e.g.:
+
+```bash
+$ bin/instance adduser foo baz
+Created user: None
+```
+
+## Add an emergency user via the addzopeuser script
+
+For `pip` based installations will have a script called `addzopeuser` in the `bin` directory.
+
+The `addzopeuser` script might also be available in `buildout` based installations.
+
+Run in the terminal:
+
+```bash
+$ .venv/bin/addzopeuser -c path/to/etc/zope.conf username password
+User username created.
+```
+
+The `addzopeuser` script and `zope.conf` locations might vary based on your installations.
+Replace `username` and `password` with the desired values.
+
+If the user already exists, no user will be created. The password will not be changed, e.g.:
+
+```bash
+$ .venv/bin/addzopeuser -c tmp/zeoclient/etc/zope.conf foo baz
+Got no result back. User creation may have failed.
+Maybe the user already exists and nothing is done then.
+Or the implementation does not give info when it succeeds.
+```
diff --git a/docs/admin-guide/index.md b/docs/admin-guide/index.md
index a4df3676f..fdfd90ea3 100644
--- a/docs/admin-guide/index.md
+++ b/docs/admin-guide/index.md
@@ -30,6 +30,7 @@ install-pip
 
 run-plone
 add-site
+add-emergency-user
 configure-zope
 add-ons
 export-import