I've been utilizing his great site for year and just recently set up the log in credentials-
My understanding is that the PCQI is the most knowledgeable about food safety and has the oversight of the program development. I would think the FS Team Leader and PCQI is one in the same.
Below is copied from FSMA FAQ's (Preventative Controls -Question 5)
PC.5 What is a preventive controls qualified individual?
This is a new term in the final rule. A preventive controls qualified individual is someone who has successfully completed certain training in the development and application of risk-based preventive controls or is otherwise qualified through job experience to develop and apply a food safety system. The written food safety plan required of food facilities must be prepared, or its preparation overseen, by one or more preventive controls qualified individuals. And the preventive controls qualified individual is charged with overseeing the validation that preventive controls are capable of controlling identified hazards and the records review.
Hope this helps