On our Add Assignment windows in Change, Incident, etc. it is set up so that Group is mandatory and if you select the Group, it would filter to show you the Analysts who belong to that group. And vice versa, if you select an analyst from the drop down, it would show you the groups they belong to.
I would like to recreate this idea on our main Change window, so that the creator selects the group who will be building (Build Group) and implementing (Implementation Group). They can select the analyst if they know who it will be, but otherwise the group it assigns to would be responsible for grabbing the Change. If I drop System/Group onto Change, I can rename this to Build Group and see all of our support groups. If I drop System/User onto Change, I can rename this to Builder. The problem is that it still shows ALL of the users in the company under Builder even when I have a group selected. How do I create the logic to only show the users that below to the selected group?