The ring is where lots actually sell. Lots come up in their ring order, and as each one is hammered down the ring clerk records the result.
For each sold lot the clerk enters:
the buyer,
the hammer price — the winning unit price, in whatever pricing mode the lot uses (per CWT, per head, or lump sum),
the head count sold.
Tally computes the gross from those three and the lot's weight, so the clerk never has to do the math at the block.
A lot's pricing mode decides what the hammer number means: per-CWT multiplies by total weight, per-head multiplies by head count, and lump sum is taken as-is.
Admin section
Permissions, locking rules, and setup — visible to admins.
Technical section
Data model, API, and internals — visible to developers.