Arma 3 Mission Editing: Units & Waypoints 

This is an Arma 3 Eden editor tutorial focusing on units and waypoints & following on from the basics tutorial video.
How to's...
• Fire trigger on units death...
(type the following into trigger condition field)
!alive unitname
(unitname is replaced with whatever you call the unit)
• Fire trigger on death of multiple units...
!alive unitname1 && !alive unitname2
• Fire trigger when unit enters vehicle...
(type the following into trigger condition field)
unitname in vehiclename
• Fire trigger when multiple units have entered the vehicle...
unitname1 in vehiclename AND unitname2 in vehiclename