remove_travel_option_added_character_effect

remove_travel_option_added_character_effect = {
	save_scope_as = travel_owner
	# Send all the hired companions back to the pool
	current_travel_plan = {
		every_entourage_character = {
			limit = {
				has_character_flag = travel_option_added_character
			}
			if = { #Characters that should in fact not leave because of _stuff_ that happened en route
				limit = {
					is_ruler = no
					NOT = {
						any_spouse = {
							is_ruler = yes
						}
					}
					trigger_if  = {
						limit = {
							inspiration ?= {
								exists = inspiration_sponsor
							}
						}
						NOT = { scope:travel_owner = inspiration.inspiration_sponsor }
					}
				}
				select_and_move_to_pool_effect = yes
			}
			remove_character_flag = travel_option_added_character #We always clean up the flag.
		}
	}
}

As written in game/common/scripted_effects/00_courtier_guest_management_effects.txt.