Add Benjie and ExecuteGroupedFieldSet to September WG (#1372)

Author: benjie

agendas/2023/09-Sep/07-wg-primary.md

@@ -99,10 +99,12 @@ hold additional secondary meetings later in the month.
 
 ## Attendees
 
+<!-- prettier-ignore -->
 | Name             | GitHub        | Organization       | Location              |
 | :--------------- | :------------ | :----------------- | :-------------------- |
 | Lee Byron (Host) | @leebyron     | GraphQL Foundation | San Francisco, CA, US |
 | Alex Reilly      | @twof         | Independent        | San Francisco, CA, US |
+| Benjie Gillam    | @benjie       | Graphile           | Chandler's Ford, UK   |
 
 
 ## Agenda
@@ -122,3 +124,5 @@ hold additional secondary meetings later in the month.
    - [Ready for review](https://github.com/graphql/graphql-wg/issues?q=is%3Aissue+is%3Aopen+label%3A%22Ready+for+review+%F0%9F%99%8C%22+sort%3Aupdated-desc)
    - [All open action items (by last update)](https://github.com/graphql/graphql-wg/issues?q=is%3Aissue+is%3Aopen+label%3A%22Action+item+%3Aclapper%3A%22+sort%3Aupdated-desc)
    - [All open action items (by meeting)](https://github.com/graphql/graphql-wg/projects?query=is%3Aopen+sort%3Aname-asc)
+1. Changing `ExecuteSelectionSet` to `ExecuteGroupedFieldSet` (20m, Benjie)
+   - [RFC](https://github.com/graphql/graphql-spec/pull/1039)