Firmware/Settings - Add "Activate the Business Edition" section

source/manual/firmware.rst

@@ -64,3 +64,34 @@ Usually the default options are good enough here, but if you want to choose a mi
 
     The settings menu also provides the option to test development versions, which can be practical when testing features that
     are planned for release. Just change the release type to **Development**.
+
+
+Activate the Business Edition
+...........................................
+
+When you have purchased a license for the Business Edition or received it pre-installed on an appliance, you will
+have to enable the license first.
+
+In order to do so, please choose the following settings:
+
+============== ==================================================================================
+Mirror:        Deciso (HTTPS,NL,Commercial)
+Flavour:       OpenSSL
+Type:          Business
+Subscription:  XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX (the activation key for the product)
+============== ==================================================================================
+
+
+.. image:: ../hardware/images/quickstart_be.png
+    :width: 500px
+
+
+After save, go back to the status tab and click **Check for updates**
+
+
+.. Note::
+
+    Upgrading to OPNsense BE is only possible when the installed community version number is lower than the
+    last available business edition. E.g. you can upgrade **22.7.x** to **22.10.x**, but you can not upgrade
+    **23.1** to **22.10**. You can always re-install using the installer found on the `business mirror <https://opnsense-update.deciso.com/>`__
+