Either on the Individual Ship screen (F6), Combat Settings Tab, the Battle Control Window (F8) or you can give a whole TG the order to move to a point in space, be it planet, jumppoint, waypoint of whatever, and activate all sensors there.
Your actives will paint the target, once it is in range, your firecons will lock the target, if in range and your weapons will kill the target, if in range (at least that is the theory
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