Unit Group - Order (Last created unit group) to Move To (YourPoint)
Move Wave P1
Events
Unit - A unit enters Monster Spawn <gen>
Conditions
(Owner of (Triggering unit)) Equal to Player 12 (Brown)
Actions
Set tempoint = (Center of 1 <gen>)
Unit Group - Pick every unit in (Units in Monster Spawn <gen>) and do (Unit - Order (Picked unit) to Move/Attack To tempoint)
Custom script: call RemoveLocation(udg_tempoint)