In a Jira data center instance with lots of projects with lots of internal users, we have a few Jira projects that are accessible to all internal users and a few external users (outside our company with special permissions).
We want to enable our external users to reassign issues and add watchers, but not see all the possible users in the drop down list.
Is there a way to disable the drop down pick list, for assignee and watchers, but still allow any user to be entered in the fields?
We want the external users to see the actual assignee and watcher names on issues.