During a 30-second time-out, A6 goes to the scorer to substitute for A1:
(a) before the 15-second warning signal;
(b) after the 15-second warning but before the time-out is over; or
(c) as the players break the huddle and take their positions on the court just prior to the signal ending the time-out.
The substitution will be allowed in
(a), but denied in
(c). As with a 60-second time-out, substitutions must be made before the warning signal is given.