diff --git a/Architecture.md b/Architecture.md
index 07af96c..fbc9c2e 100644
--- a/Architecture.md
+++ b/Architecture.md
@@ -34,6 +34,7 @@ logger:
     level: "debug"  # level of logging - one of "debug", "warn", "emerg"
     max-size: 1048576  # 1 MB; max size of file before log rotation
     rotations: 3  # number of rotations kept
+hwgroup: "group1"
 limits:
     time: 5  # in secs
     wall-time: 6  # seconds