hunt_all_attendee_xp_effect

hunt_all_attendee_xp_effect = {
	hidden_effect = {
		scope:activity = {
			every_attending_character = {
				limit = {
					is_alive = yes
					NOT = { has_character_flag = not_slaying }
					trigger_if = {
						limit = {
							NOT = {
								scope:activity = {
									has_activity_option = { category = special_type option = hunt_type_falconry }
								}
							}
						}
						can_be_combatant_based_on_gender_trigger = { ARMY_OWNER = scope:host }
					}
				}
				add_to_list = animal_slayers
			}
			activity_host = { add_to_list = animal_slayers }
		}
		every_in_list = {
			list = animal_slayers
			if = {
				limit = { has_trait = lifestyle_hunter }
				send_interface_toast = {
					title = hunter_xp_gain_message
					hunter_progress_point_gain_effect = { CHANGE = $CHANGE$ RANDOM_CHANGE = $RANDOM$ } #Gives points towards ranking up the Hunter Lifestyle
				}
			}
			else = {
				hunter_progress_point_gain_effect = { CHANGE = $CHANGE$ RANDOM_CHANGE = $RANDOM$ } #Gives points towards ranking up the Hunter Lifestyle
			}
		}
	}
}

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