Who issues the guidelines for substitution cases in the Hajj process?

Who issues the guidelines for substitution cases in the Hajj process?

حج کے عمل میں متبادل معاملات کے لیے رہنما خطوط کون جاری کرتا ہے؟
Explanation

The Ministry of Religious Affairs issues the guidelines for substitution cases involving successful Hajj applicants