Unhappy with both the choice of candidates and the "street smarts" vs. "book smarts" premise from the preceding season, Trump went to the auditions and hand-picked 17 of the 18 candidates in season 4. In addition to candidate handpicking, Trump decided to go back to the premise of men versus women (there was eventually corporate restructuring). The all-women team named their corporation Capital Edge while the all-men team named their corporation Excel.
The winning project manager, throughout the season, may be exempt from firing for the following week only if the majority of the other members in their team believed he/she did a satisfactory job. In the previous two seasons, the winning project manager would automatically be exempt from firing.
