We have projects that use assignment groups to create queues. I would like to create a single selecet custom field that will list project roles instead of groups. The reason for using project roles instead of groups is that the Project Administrator can add/remove users from the project roles as needed. In order to add/remove users from a group, you need JIRA Administration access.
Once I have this field set, I would then like to use this field to limit the select list for the assignee field to the project role selected as well as send a notificatin to all users in the project role.
I have looked at the User Group plugin and the Dynamic Forms plugin, but have not found what I need.