diff --git a/Architecture.md b/Architecture.md
index bc88217..64cc6d8 100644
--- a/Architecture.md
+++ b/Architecture.md
@@ -25,6 +25,7 @@ headers:
         - python
     threads: 2
     hwgroup: "group1"
+working-directory: /tmp/working_dir  # if not set then default is: __TEMP__/isoeval
 file-managers:
     - hostname: "http://localhost:80"  # port is optional
       username: "654321"  # can be ignored in specific modules