Siegried Blunk, of Germany, will replace Marcel Lemond, who resigned in September.
The group also found financial ties between individuals in government and businesses responsible for rights violations.
Ninety-five political leaders from 44 Asia and Pacific nations met in Phnom Penh on Thursday to strengthen their role in the region.
Family members will receive up to $12,000 each from different organizations, the government, the owners of Diamond Island, and others.
Bayon TV said it collected more than $2.5 million in the week following the deadly bridge stampede.
Some 2,700 people from 14 provinces contributed corruption complaints earlier this year.
The CAPDI is part of the International Conference of Asian Political Parties, which is made up of 300 members.
Prime Minister Hun Sen said on Monday no one would be fired as a result of the disaster, and that no single person deserved the blame.
The Diamond Bridge stampede left 351 dead and 395 injured at last count, one of the worst disasters in Cambodia, in decades.
The seven-day ceremony is meant to put the souls of the dead at ease.
It has been screened for professors of political science, human rights, law, genocide and Southeast Asian studies over the past weeks.
Monday marked the seven-day funeral ceremonies for the 351 casualties, a figure revised upward Monday from 345.
By Friday evening, Bayon TV had raised more than $1.08 million and CTN had brought in more than $500,000.
Cambodian-Americans gathered at their embassy in Washington on Wednesday to pay their respects to those who died on Diamond bridge.
People were pressed from all sides on the bridge, three survivors of the tragedy, which claimed 347 lives, told “Hello VOA” on Thursday.
The 2011 budget that the Cambodian National Assembly recently passed totaled to $2.4 billion.
With the official figure at 347 dead, opposition lawmaker, Mu Sochua said the cause of the disaster must be uncovered and dealt with.
Chams suffered greatly under the Khmer Rouge, and their plight in part makes up the charges of genocide against the four leaders.
The observer dismisses the transferring of cases to local courts as a plausible solution to the court's financial problems.
Phnom Penh authorities will build a memorial on Diamond Island for the dead.
ព័ត៌មានផ្សេងទៀត