An official may be replaced only at the discretion of the Head Official. If there are already two officials present, any request for a new official will be denied, and the team will be charged with a technical foul. A team may not switch positions during an official time out, unless they are otherwise entitled to do so see 12. Table Maintenance Any necessary table maintenance, such as changing balls, tightening the men, etc. , must be requested before the start of the match. The only time that a player may call a table maintenance time out during a match would be in the case of a sudden alteration to the table, such as a broken man, broken screw, crumbling bumper, bent rod, etc.