Final answer:
In bankruptcy proceedings, the payment plan is confirmed or rejected by the bankruptcy judge. Creditors can object, and Leah's attorney can assist in drafting, but neither has the authority to confirm.
Step-by-step explanation:
The authority to confirm or reject a plan of payment in the context of bankruptcy proceedings is vested in the bankruptcy judge.
Leah's attorney may assist in drafting the plan and advising Leah, but does not have the power to confirm the plan.
Creditors can object to the plan, but their role is not to confirm or reject it; they may only influence the judge's decision.
The debtor's family has no formal role in the legal process of confirming or rejecting the payment plan.