Recognizing all holes in a Setup

Import your solid model or *.iges file.
If necessary, transform the part so that the surfaces that represent the features are facing toward the Z axis.
Select Features & Manufacturing tab > Features panel > Features.
Select the Hole feature type.
Select Extract with feature recognition, and click Next.
Select Recognize and construct multiple holes and click Next.
Set the Hole recognition options.
Select holes in the graphics window.
Holes that you can select are blue, and selected holes are red.
Click Finish.