Dare I ask how to do
precision setups on it?

With toolmaker's buttons. You start on a surface plate and
scribe two intersecting lines at the location of the center of your
desired feature. The drill and tap it for the screw which comes with
the toolmaker's buttons.

What I always found to be a much faster way was to use a combination
drill/countersink on the location of the feature and use a spring center to
indicate the location off of that.

I will readily grant and acknowledge that the toolmakers buttons let you
adjust AFTER the hole is created, if you have good dials or a good readout
on your mill, you really shouldn't NEED do adjust the buttons

Mike