I will attempt to locate PNF techniques for Postural Drainage. In the mean time consider Postural Draining Techniques with Percussion for effective mobilization of secretions. Educating the individual with the Active Cycle of Breathing with Effective Huffing is also effective to facilitate self-management of secretions. See attached for Postural Drainage recommendations. You can always add PNF Chop/Lift Patterns with Effective Huffing to facilitate clearance if pt appropriate.
Hope this helps and take care.