Customization - icon size

[Chris Jones <cjns1989 gmail com>]

I have a fairly large number of applications installed on this
debian/linux machine.

When I display the "applications list" gnome-shell displays a 4x6 matrix
of oversized icons with huge gaps in between. Making the PC look like
a blown up screen phone.

More to the point this results in 13 screenfulls of these huge icons
so I can browse the whole list of installed applications.

How do I change the settings to somethings like 32px icons displayed in
a 12x12 matrix so everything fits on a couple of screens?

Please advise.

Thank you,

CJ