Update 0000-project-groups.md

Author: XAMPPRocky

text/0000-project-groups.md

@@ -101,7 +101,8 @@ This is a high level overview of the complete process of a project group.
 5. The group works towards the goals laid out in their charter.
 
 6. When active work has stopped a group is "archived".
-- Archival can be started by the project group shepherds.
+- Archival can be started by the project group shepherds, the liasion, or the lead(s) of
+  the parent team if needed.
 - Archival is not necessarily a permanent state, it is only a reflection on the current
   status of the group. A group can be "restored" at a later stage.
 - Reasons to archive (non-exhaustive):