tournament_contest_versus_pulse_effect

tournament_contest_versus_pulse_effect = {
	scope:activity = {
		if = {
			limit = {
				NOT = { exists = var:contest_versus_progress }
			}
			set_variable = {
				name = contest_versus_progress
				value = 0
			}
		}
		else = {
			# Progress tournament stage tracker
			change_variable = {
				name = contest_versus_progress
				add = 1
			}
		}
		# Resolve bouts for current stage (we use stage prior here to select from those who made it through)
		switch = {
			trigger = var:contest_versus_progress
			0 = {
				tournament_contest_versus_pair_effect = { CONTEST = $CONTEST$ STAGE = qualified }
			}
			1 = {
				tournament_contest_versus_pair_effect = { CONTEST = $CONTEST$ STAGE = semi_finalist }
			}
			2 = {
				tournament_contest_versus_pair_effect = { CONTEST = $CONTEST$ STAGE = finalist }
			}
		}
		# Save scopes for events
		tournament_contest_versus_summary_scope_effect = yes
		# Fire summary events
		every_attending_character = {
			limit = {
				OR = {
					is_in_guest_subset = { name = qualified }
					is_ai = no
				}
			}
			trigger_event = contest_events.0820
			trigger_event = {
				on_action = tournament_intent_setup_events
				days = 1
			}
		}
	}
}

As written in game/common/scripted_effects/04_dlc_ep2_tournament_effects.txt.