Hajj campaigns announce that they perform the proxy Hajj to be performed by its staff, so people pay a sum of…

Hajj campaigns announce that they perform the proxy Hajj to be performed by its staff, so people pay a sum of money for a proxy Hajj for them and their relatives. They launch the campaign for what it deems appropriate by identifying the person and how to agree with him. Is it permissible for the campaign to agree with the staff on proxy Hajj, and give it half of the amount? Is it permissible to do the campaign of let the staff members perform Hajj with their clients and take the amount as a price for that service?