Existing members in both the Account Members list and the Project Members list can only be updated one member at a time. This is very time consuming when manually updating a large number of members on either member lists. Bulk editing member details is already possible when adding new members to a project. Please add the same functionality for members that have already been added.

Request summary:
Enable the bulk editing feature from adding new members to all member lists.
Impact:
- Improves and automates ACC admin tasks and maintenance.
- Provides cohesion of ACC features