Just to clarify (at the District level) all of them, not just the “people in their committees” (including Membership chairs, Training chairs, Advancement chairs, etc.), are registered as committee members (code 79). (But most usually, Committee “Members-at-large”, code 75).
The only exception to this is a single District Chair (code 61) and sometimes a couple of vice-chairs (code 62).
All of the “position manager” entries at the District level are “functional” positions only that are assigned to District Committee members-at-large (code 75).
Only the Unit level “position manager” can change “registered” positions at this time.