Unfortunately the Creator of the missions in the Arma3 can't influence on duration of searches in the settings of waypoint - SEEK AND DESTROY. **Any settings for duration of the search, inside waypoint settings, would be highly desirable. **
If the ability to create such settings is not, then the duration of searches for AI by default, must be increased. The reason is obvious. If Ai have a several waypoints and last waypoint - seek and destroy, then looks very irrational, when the AI, after several minutes stops any movements in and is idle in the formation. If no one has found enemy, then at least the ai squad should be dismissed, within of not big radius (as at dismissed waypoint). Human squad in Arma, needs to look like a human, but not like a robot. If the units is are not moving - it is not good.
Very bad waypoint duration of Seek and Destroy looks at AI-vehicles! After approximately 5 minutes, any land Ai-vehicle will stop its movement and will stand. Why it stops so quickly? It should seek and seek and seek!
As it seems to me, the waypoint "Seek and Destroy" should be setting the duration of the search. It will be the best solution