According to Hippocratus- Nelson method, pressure applied for reduction of dislocated mandible:
Downward Pressure is applied on mandibular molars with simultaneous upward pressure on chin to unlock the mandible
↓
 Backward pressure on mandible to seat the condyle in glenoid fossa
Downward pressure on molars.
Backward pressure on mandible.
Downward pressure on mandible.
Both A& B.