Click NC > 2 Axis > Drill.
Perform Z axis canned cycles including drilling, reaming, tapping and boring.
Tool Information tab | Cycle Control tab | Sorting Control tab
Your drawing must have either a circle or a point at the position of the holes to drill. You can use larger circles to indicate larger drill holes. The Hole Processing operation can identify the diameters of the circles.
Optionally, use a line to indicate the depth of a hole. The line must be parallel to the Z axis in 2 and 3 Axis Drill operations. Start the line at a drawn point or the center of a drawn circle and then check the Use Centerline as Depth option on the Cycle Control tab to let that line determine the hole depth.
When your drawing is correctly prepared, you can start the creation of the drill toolpaths.