pam_schism_seat_head_of_faith_effect

pam_schism_seat_head_of_faith_effect = {
	if = {
		limit = { exists = scope:new_head_of_faith_title }
		custom_tooltip = {
			text = pam_schism_seat_head_of_faith_tt
			faith:christian_faith = {
				if = {
					limit = { NOT = { has_doctrine = doctrine_spiritual_head } }
					change_doctrine = doctrine_spiritual_head
				}
				set_religious_head_title = scope:new_head_of_faith_title
				# Carolingian Christianity has doctrine_no_head; leave it behind once the faith has a head
				hidden_effect = {
					every_faith_rite = {
						if = {
							limit = { rite_has_doctrine = doctrine_no_head }
							change_rite_doctrine = doctrine_spiritual_head
						}
						force_refresh_head_of_rite = yes
					}
				}
			}
		}
	}
}

As written in game/common/scripted_effects/pam_effects.txt.