Analyst initials in Results Entry

Issue: What determines whether or not a user can see the list of analysts in Results Entry, and whether a picklist appears for those initials?

Solution: The initials are from USERHEAD:
SELECT INITIALS FROM USERHEAD WHERE CURRENT_STATE = 'ACTIVE' ORDER BY USERHEAD.INITIALS
But other rules may be involved in the ANALYST_BY_SYSMGR settings.