diff -r 35531ef36bab -r 682b4aa84276 tutorial/adding_system.rst
--- a/tutorial/adding_system.rst	Fri Mar 30 18:15:23 2012 +0200
+++ b/tutorial/adding_system.rst	Fri Mar 30 18:15:44 2012 +0200
@@ -1,4 +1,53 @@
-Adding systems
+Adding a system
 ===============
 
-Walk-through of adding a system.
+After adding a station to the database, we need to add a new system. 
+To do this, click on the **HOI systems** in the *System settings* panel.
+This will take you to a page with a list of all availabe systems that are connected with your stations. This list should
+be empty if this is the first time you add a system. 
+
+.. note:: 
+
+   In the Single Calculus Chain, a *HOI System* represents a specific configuration of a lidar system. 
+   For example, if you are operating a lidar system and you use different channels during daytime and nightime, 
+   you will need to register *two different* systems in the database, one for each different configuration you use.
+
+
+To add a new system to the database click on **Add HOI system** at the top right of the screen.
+This will take you to a new page were you can fill in the needed information. As before, the fields in **bold**
+are mandatory and you will need to fill them before you can save you new system. 
+
+.. note::
+   
+   Not every field that is present in the database is used in the in the Single Calculs Chain. 
+   Many of them are part of the Handbook of Instruments.
+
+For now you will need to fill in the following fields:
+
+Name
+   The name of your system.
+   
+Station (owner)
+   From the drop-down list, select the station which this system belongs to.
+
+Configuration
+   The name of the specific configuration. For example you could specify "night time" if the system you are registering
+   correspond to the night-time configuration of your system
+   
+Pi
+   The principle investigator of this system
+   
+Height asl
+   The altitude of the system above sea level (in meters). 
+   
+You can leave all the other fields empty. When you are done, press the **save** button at the bottom right of the page.
+This will take you back to the list of your systems. If everything went OK your new system you just added should appear
+in the list.
+
+We don't have to make any more changes in this part, so you can click on **Home** 
+on the top left of the page to return to the starting page of the *admin section*.
+
+
+
+ 
+