Hole Wizard and Selection of surface

Sometimes surface is selected, after the hole Wizard is activated other times surface is selected before the hole Wizard is activated. Is there any particular reason for this?

Introduction to the Hole Wizard - SOLIDWORKS 2016 - YouTube

Time 1.43-1.53

Hole Wizard Tips for SolidWorks - YouTube

0.09-0.17

SolidworksParts And Features