Thanks for your excellent questions.
TURN GRID OFF:
SELECT HOLES BY SIZE:
Using the selection filter, FAB 3000 can select holes the same size or within a range that you provide. So for example it's possible to select holes between 1mm and 2.5mm, or traces less than 10 mil diameter, etc. You can also save those selection filters for easy access later. Please perform the following:
Determine the size (i.e. range) for the objects you wish to select. I will assume 0.06 inch for this example:
Here's some sample forum posts which may help.