From PFT:

“Postseason Procedure.  If a club wishes to discuss a vacant high-level non-player, non-coach position (defined as club president, general manager, or a position with equivalent responsibilities and authority) with an individual who is not a high-level employee, and whose employer club is participating in the playoffs, the following procedure shall apply:

“a) The owner or operating head of the inquiring club may contact the owner or operating head of the employer club to request written permission to discuss its high-level position with an individual who is not a high-level employee.

“b) If the employer club elects to grant permission to the inquiring club, any interview or interviews may be conducted at a time and place that is convenient for the employer club.  There is no limitation on the number of times that an individual may be interviewed by the same club, provided that, in each instance, permission has been received from the employer club.

“c) No contract shall be executed, and no agreement to execute a contract, or an announcement of a contract or of an agreement for employment, shall be permitted until after the conclusion of the employer club’s playing season, unless the employer club has specifically granted written permission for its employee to accept a position with the new club prior to the conclusion of its participation in the postseason.

“d)  If a club elects to grant permission for one of its employees to interview for a high-level position, or to accept employment, it must grant permission to all inquiring clubs that seek to interview him.  Permission cannot be granted selectively.

“e)  If a club elects to grant permission for one of its employees to interview with an inquiring club or clubs, or to accept employment, it may deny permission for another member of its organization, provided that the denial is applicable to all inquiring clubs.”