The audiencia was forbidden to act alone in the selection of judges of residencias or pesquisidores; it was commanded not to interfere with governors of provinces, but it had the right, when, charges had been made by private individuals, to conduct investigations of governors' official conduct. The audiencia was empowered to investigate the judges of provinces. Magistrates were forbidden to hear cases affecting themselves or their relatives, and when a case involving more than one thousand pesos was before the tribunal, and no oidor was eligible to try it, an alcalde ordinario might serve in the place of a regular magistrate, with appeal to the Council of the Indies. Criminal charges against the oidores were to be tried by the president, with the assistance, if need be, of such alcaldes ordinarios as the latter might select. No relative of the president or of an oidor could be appointed legally to a corregidor-ship or to an encomienda. Oidores were eligible for appointment by the president from time to time to inspect the administration of justice and government in the provinces. Oidores were forbidden to receive fees from or to act as advocates for any private person, and they could not hold income-yielding estates in arable land or cattle. Oidores were forbidden to engage in business, either singly or in partnership, nor could they avail themselves of the compulsory services of Indians under pain of deprivation of office. Any person could bring suit against an oidor. As noted above, such cases would either be tried by the president or by an alcalde ordinario on the president's designation. Such cases might be appealed to the Council of the Indies. The audiencia, according to the terms of its establishment, had extensive authority over matters of government. In case of the death or incapacity of the president, the audiencia was to assume control of affairs, the senior oidor filling the post of president and captain-general, with special charge over military matters. Under such circumstances the administrative and executive functions were to be administered by the audiencia as a body. The governor, who was also president of the audiencia, was ordered to make a complete report annually to the Council of the Indies on the state of the government and the finances of the colony, including an account of the gross income and expenditures, a survey of conditions of the encomiendas and corregimientos, as well as a report on the conduct of officials, including oidores. In fact, all matters that came regularly under the care of the executive were to be covered in the annual report of the governor and captain-general of the Islands.