There are three types of authorities in a company: managing authorities, supervisory authorities, and judicial authorities. Managing authorities include the directors who are responsible for running the day-to-day operations of the company. Directors have duties like preparing annual member lists, calling shareholder meetings, enforcing calls for unpaid stock, declaring dividends, and presenting financial reports. They also have powers granted by the articles of association like raising capital, issuing shares and debentures, investing company funds, and approving employee bonuses. Directors serve three-year terms and can be removed by shareholder resolution.