docs: add more Chair responsibilities (#197)

charter/README.md

@@ -102,6 +102,17 @@ Chairs have responsibilities to their parent Working Group: they ensure that the
 
 Chairs have responsibility to all participants in transparently reporting the group's activity.
 
+Chairs also have the following regular duties within their Working Groups:
+* Collect agenda items prior to each meeting to ensure a smooth and focused Working Group meeting.
+* Ensure that the Working Group is notified of the agenda for the meeting in a timely manner advance of the meeting.
+* Attend and lead each Working Group meeting.
+    * If the Chair is unable to attend a given meeting, they should delegate a pre-appointed person to lead the meeting in their stead.
+* Ensure meeting notes are uploaded to the `governance` repo in the Working Group's respective sub-folder following each meeting.
+* Check into persistent issues present on a given Working Group's repositories of responsibility (ex. bot failures)
+* Ensure that the WG roster list is an accurate reflection of current member activity.
+
+In addition to these reponsibilities, a Chair may have additional responsibilities specific to their Working Group.
+
 ### Reaching Agreement
 
 If an issue affects only one Working Group, that group can make decisions [on its own](#Meetings).