Just an update - after an hour of trial and error, I thought I'd post all of the steps (for beginner mission makers like me!)
* LINK DATA MUST BE ON
* Place Object
Include in Sim
Auto Detect
POI-0
* Put Objects into Dynamic Group
POI - 0
Min/Max - Same Number
* Script
Create Group
* Trigger - Create Group
* Firing the TLAMs
TLAM impact - 1st Waypoint is the target! (Using RA Mod)
Hope this helps!
Stew