He probably means if he using a QD as a pad conditioner to prevent marring when using initially. Once the pad is primed with polish, you do not need to use QD.
You can just this when the pad new fresh and not primed with polish yet. Some polishes work better with a conditioner some do not.
The usual tips are:
1. work the polish long enough
2. if it does not seem to breakdown soon you are using too much polish (use less) or the pad has too much dried polish (clean the pads of excess after a few panels if it tends to dust or dry out).