LANAR (LAN Argentina-4M) is not recruiting at this moment. Only one more A320 is scheduled on next June. Thatīs it. There are rumours about recruiting 6 FOs but big chances have the Argentine FOs flying for LAN Express to be offered those positions.
The minimum requierements for 4M are higher than the LATAM holding.
Total Time, 1000 hrs+Comercial de Primera license+Argentine Passport.
For LANEX, you should keep your application updated and wait to be called.