Hyper-V Server 2019 GUI Installation Guide
Hyper-V Server does not include much in the way of graphical tools, but third-party alternatives can be installed.
I found a disturbing lack of basic instructions for using Hyper-V Server 2019, so it is my hope that this guide is useful to somebody.
Before starting this guide, enable Remote Desktop support in Hyper-V Server using the built-in configuration menu. If you connect to the Hyper-V Server with Remote Desktop, it will make it easy to copy and paste text (and later, files) from a normal Windows desktop machine.