When do lineup entries and edits close? (US)

All Contest entries close upon a contest locking, which will be shown as the lock time. The lock time will be prior to the start time or at the start time of the game/match.

Orange arrow pointing to a rectangular countdown timer box on the right side of the webpage. The box is dark with an orange border and displays the text 'CONTEST GOES LIVE IN' in white, followed by a digital countdown '03:00:08:25', indicating the time left until the contest starts. The timer specifies that the contest will start on 12/10 at 10:00 am.

Non-Late Swap Contest
Lineup edits close when the contest locks, which will be before the game start time or prior to the game’s start time.
As an example only: I've reserved an entry into an MMA Classic contest. The contest requires players to draft 6 fighters with the first match starting at 1:00 PM EST. All fighters will lock before the start of the 1:00 PM EST match when the contest locks.
Late Swap Contest
Players can make lineup edits leading up to each game's lock time. Athletes cannot be added or removed from a lineup once their contest’s lock time has passed.
As an example only: I've reserved an entry into a contest from the NFL Classic main set. It contains 7 games at 1:00 PM EST and 2 games at 4:25 PM EST. Your lineup will lock at the lock time before the 4:25 PM EST games. Between 1 PM EST and 4:25 pm, you’ll be able to make edits to your lineup in the 4:25 PM EST game.