If this is related to the footprint of a part, it would be best to specify the drill hole in the footprint itself using the footprint editor.
To do this you would place a pad in the footprint. Then edit that pad’s properties by hovering the cursor over the pad and hitting the “E” key.
When the pad properties come up, change the pad type to NPTH, Mechanical
For most mechanical holes there is no copper surrounding the hole, so you would want to set the Size X: and the Hole size X: properties to the same dimmension.
I hope this helps, and good luck!
Let us know if you have any more questions.
Sr. Applications Engineering Technician
701 Brooks Ave S
Thief River Falls, MN 56701 USA