Using-the-grading-file.md

@@ -135,10 +135,28 @@ You can either use the `\input{grading_mc.tex}` command to include this at the e
 
 # Grading file
 
-The `GradingWorkbookCreator.xlsm` is an excel based tool that is able to **import student data from, end export it to eDoz**.
+The `GradingWorkbookCreator.xlsm` is an excel based tool that is able to **import student data from, end export it to eDoz**. This tool needs development, in its current stage it is rather intricate. As a general rule you should always maintain a backup copy of the file in case your working copy corrupts!
 
 The file is located in the central git repo ([download](https://gitlab.math.ethz.ch/teaching/exam-template/-/blob/main/GradingWorkbookCreator.xlsm)). 
 
+## Opening the file via citrix
+
+To work with the file it is best if you proceed as follows. 
+
+1. On an ISG supplied Linux client (either physical or via ThinLinc), start the Citrix Workspace. (If you start the software for the first time you must accept the license agreement and supply your user information: your_username@d, your eMail password).
+
+![citrix](uploads/08204ad5436948903c973843034e7813/citrix.jpg)
+
+2. In citrix, open Microsoft Excel.
+
+![citrix_home](uploads/2d54b968bb8e8b1ec9d7d808aa50fbf7/citrix_home.jpg)
+
+3. In Excel, hit open, then brose. Via "shares" you can access your home directory (you cannot access the files directly e.g. via "Desktop", you must access files stored on the desktop via the shares and your home directory!)
+
+![excel_2](uploads/727be3b5e6562f9c480b139fa62952da/excel_2.jpg)
+
+## Working with the file
+
 Once you open the file, you are presented with the instructions on how to use it.
 
 ![grading_book](uploads/9a3f6bdeb90618316808b63c85ba730a/grading_book.png)