You have opened a project. You have opened an outline of the type "Outline NC record generation" in the Outline editor (for example via the Utilities > Master data > Outline (NC data) > Open menu items) and have created an NC record for this outline. Utilities > Master data > Outline (NC data) > Edit record > Generate drill hole.
In this dialog you specify the properties of the drill hole.
Overview of the main dialog elements:
Select one of the drill hole diameters defined for the machine from the drop-down list next to the field. Manual input is not possible here.