late activation

I am trying to add flights of adversary planes. I want to practice in the F-15c, against progressively harder planes. I have tried to set a trigger zone and have the first flight take off. When the first flight is dead, then the next flight will late activate. etc, etc. I cannot get the planes to late activate, but all four flights are activated at the same time. I do not know what I am doing wrong here, but I would not be surprised if it is something stupid.

Mission one Artillery Georgia Senaki.zip

Select your groups by clicking on them and check the "late activation" box.

See here: https://forums.eagle.ru/showthread.php?t=190880

I am trying to add flights of adversary planes. I want to practice in the F-15c, against progressively harder planes. I have tried to set a trigger zone and have the first flight take off. When the first flight is dead, then the next flight will late activate. etc, etc. I cannot get the planes to late activate, but all four flights are activated at the same time. I do not know what I am doing wrong here, but I would not be surprised if it is something stupid.

Try this:

On a condition of the first group being dead, the second group will activate. On a condition of the first AND second groups being dead, the third group will activate.

Thank you for the help, Doodenkoff's explanation what what I was looking for. Thanks all.