In the gamemember

Raids › Audit

Who in the guild is wearing unenchanted gear.

In your game: Raids › Audit

What it does: It has three parts. Readiness lists each member with status, iLvl and enchants. Enchants lists who has an unenchanted piece and in which slot. Sync shows how many in the guild have the addon and who is on a different version from yours.
Who sees it: Everyone.
Where to find it: In the window (J or /gos), Raids tab, Audit sub-tab. It opens on Readiness.

Nine slots are checked: head, shoulders, chest, legs, feet, wrists, hands, back and main hand. Rings, neck, trinkets, waist, off hand and ranged weapon are left out.
An empty slot does not count as missing: only an equipped piece without an enchant.
In Enchants, whoever has the most enchants missing comes first; ties, by name. With nobody missing, it shows Everyone is fully enchanted!
In Readiness, whoever has one enchant missing is marked to check, whoever has not sent data gets —, and the rest are ready.
iLvl is the average of the equipped pieces; an empty slot does not pull the average down.

Only people with the addon appear: each person's gear is sent by their own addon.
In Readiness, besides iLvl, only the enchants column has content in Forever: the other two always stay at —, and the target button never leaves All raids.