How do I file objections to the Executor's Full Accounting?

We had to petition the court to compel the Executor to account. She was supposed to disburse equally to all beneficiaries but she did not. On her informal accounting she never listed the value of the property disbursed, she was hiding assets, etc. We have lists of who got what and now in her Full Accounting she is stating that items that originally went to her went to others.