Offensive Foul Switch question

[PIAA REF]

In Pa this will be the first year that we will be following National Federation Rules reguarding not doing the Long switch. Is there any guides to help me understand this better. Does the calling official always administer the throw in when there is and Offensive foul called in the front court? I understand that if lead calls the foul he would report, then go back and administer the throw-in but what if T or C has the call. So they then administer the throw-in? or does L push.