U could also create this trigger: Activation is present and anybody (make the radius huge so u know it covers someone) then place your units and in their init field type "unitname setcaptive true". If you plan to rescue them, you must remember to use "unitname setcaptive false' in a trigger that defines when they are rescued. You might then want to synch two join wp's or a join and join and lead to make them join your squad.