While Procter will oversee the first semi-final between New Zealand and Sri Lanka at Sabina Park on Tuesday, Crowe will be in charge of the second semi-final between Australia and South Africa at St Lucia on Wednesday.
The on-field umpire for the first semi-final will be South Africa's Rudi Koertzen and Australian Simon Taufel.
Australia's Daryl Harper will be the third umpire for the match, while his Pakistani counterpart Asad Rauf will be the fourth.
Meanwhile, the second semi-final will be officiated by Pakistan's Aleem Dar and West Indian Steve Bucknor as on-field umpires, while Kiwi Billy Bowden and Englishman Mark Benson will be the third and fourth umpire respectively.
However, the appointments for the final will be made later.