foul shoots as time expires

[readingofficial]

A question that would seem easy but my partner and I had a disagreement about this. As the half ended A1 took a jump shoot, and B1 fouled her on the shoot attemp. The horn sounds as the shoot was in the air. So A1 gets two shoots. My partner put two girls of the B team on the low blocks for the foul shoots and I told him they did not need to be there because time expired. Can someone tell me what the ruling is and where i can find it, and redeem a gatorade.