Guideline 1.3 offers guidance on training O&M staff in all aspects related to commissioning, as outlined in ASHRAE Guideline 0.Because well-trained building personnel can positively influence performance outcomes at every phase of a Cx project, Guideline 1.3 covers implementation strategies and methodologies for training O&M staff and owners, formats for developing training plans, tips on how to conduct training programs, and documenting training results.This guideline is part of a larger collection of commissioning process documents from ASHRAE.