Spruce up the Synapse instructions (#364)

site/source/user-manual/service-guides/matrix.rst

@@ -4,7 +4,31 @@
 Matrix
 ======
 
-Check out our `Synapse video <https://www.youtube.com/watch?v=PtwQsybFapo>`_ for features and setup!
+Synapse
+-------
 
-    .. youtube:: PtwQsybFapo
-        :width: 100%
+  With registrations disabled, the only way to create an account on your Server is through the Admin Portal.  The Admin Portal is the preferred method for creating an account.
+
+#. In your Start9 web-UI, under `Services > Synapse`, click "Launch UI"
+#. Log in with your Admin Username and Password (located in Properties). For "Homeserver URL", do `not` enter your Homeserver address. Instead, enter your Admin Portal URL.
+
+    .. note:: This is the URL currently showing in your browser URL bar, excluding the path. e.g. https://exampleaddress.local or http://exampleaddress.onion.
+
+    .. figure:: /_static/images/services/matrix/synapse-admin-1.png
+     :width: 60%
+     :alt: Synapse Admin
+
+#. In the "Users" tab, you will notice the admin user already created.
+
+#. In the "Users" tab, click "+ Create"
+
+    .. figure:: /_static/images/services/matrix/synapse-admin-2.png
+     :width: 60%
+     :alt: Synapse Admin
+   
+#. Choose a User-ID, Displayname, and Password for your account. Optionally enter an email address under the 3PIDs section. It is not recommended to make this user a Server Administrator, as it is best to limit admin access.
+   
+    .. figure:: /_static/images/services/matrix/synapse-admin-3.png
+     :width: 60%
+     :alt: Synapse Admin
+