As @Gio posted, developing an "index" allows the shooter to look at a spot, draw, and have the sights/optic aimed at that spot.
This requires two skills:
1) Automatic sight alignment. Can the shooter extend the gun from high ready and have the dot appear in the center of the window 99.9% of the time? If a shooter "loses the dot" they don't have this skill well developed. In my experience, that requires many 1000's of reps just on this. Next, is establishing that index from other positions, including from the draw.
A more difficult skill is 2) automatic point of aim. The shooter simply looks at a spot, and can extend, draw, transition, turn, or move and have the dot appear in the middle of the window and on target.