Documentation update

Author: Repumba

docs/_static/related-files-tab.png

@@ -98,3 +98,23 @@ Using that feature we can chain together various files extracted during the anal
 - two memory dumps with unpacked code 
 
 Finally, from both of these dumps we got a malware configuration.
+
+
+Related files
+-------------
+
+Sometimes we want to add the file that is related to the object, but not containing any malware i.e. pdf report. Every object of type **file** has designated tab for such purpose.
+
+.. image:: ../_static/related-files-tab.png
+   :target: ../_static/related_files_tab
+   :alt: related files tab
+
+In this tab you can:
+
+- view list of all related files associated with this object
+- upload new related file
+- delete related file
+- download single related file
+- download .zip file containing every related file
+
+Keep in mind that those actions might require special capabilities. For more details, please read :ref:`9. Sharing objects with other collaborators`