Cardiff on Tuesday released the results of the meeting, which had been played out amid a backdrop of some unrest after Mackay's head of recruitment Iain Moody was removed from his post last week.
Moody was replaced by 23-year-old Kazakhstani Alisher Apsalyamov, who is thought to be a friend of Cardiff owner Vincent Tan's son and has no known experience of top-class football.
Mackay will, however, have the final say over the Cardiff's transfers after it was unanimously agreed to back him with a restructure of the club's board with four new committees.
Most significantly a 'Nomination and Corporate Governance' committee will be headed by chairman Mehmet Dalman.
According to a Cardiff statement, the main responsibility of the committee will be "to support the manager, Malky Mackay, on all player purchases and sales.
"All transfer dealings will be conducted subject to the manager's final approval."