So....
I have had this HstWB package installed and up and running now. Just in it's basic form. First I tried to do it on my Amiga native, and that did not work. Then I tried to make the package on FS-UAE on my Linux machine, yet that installation of UAE seems to be a bit strange. Finally I tried to make it, using my old Win7 laptop, and that worked. Strange...

Anyway...
First things first.

- What you need to make a working harddrive (CF, Real drive, Microdrive or whatever that can be used in a real Amiga).
- Then you need to download a installer from the HstWB site. Get one of them.
- Go to https://hstwb.firstrealize.com/ and select "Download" and then get one of the Prebuild self install images for Amiga's, WinUAE and FS-UAE emulators supporting RDB packages, that are avaliable in 4, 8, 16, 32, 64 or 128gb size.
- You need a legal copy of the kickstart rom, that are in the Amiga you are trying to make the drive for.
- Then you need a bunch of other legal kickstart roms, that WHD loader need's.
- And finally, you need a copy of WinUAE installed on your Windows machine.

Make a new folder, and unzip the package you have downloaded from the web. Instide the folder there is a HDF file, that are the HDD image.
There are a couple of other folders called: Amigaos, Kickstart and Userpackage. They need to be used during the installation.
Set WinUAE up first, without any harddrive, so you know the basic setup is working.
Then add the HDF file as the Harddisk.
Then add the folders Amigaos as AMIGAOSDIR, Kickstart as KICKSTARTDIR and Userpackage as USERPACKAGESSDIR. (Same place you added the harddrive)
Make sure you add them as folders and not harddrives or something. Make sure they are not bootable.
The AmigaOS directory contains the OS you are going to use, and you need to add it as ADF files. No files, you need to use floppy based OS.
The Kickstart directory should contain those kickstart roms that WHD-Loader needs for games and other software.
The Userpackage directory contains all the modules and stuff the installer need for making stuff like WHD-Loader.

Start WinUAE and follow the instructions. Take note, that it takes some time to make the HDD image. Especially if you set WinUAE up as an Amiga500.
When it is all done, then close WinUAE and write the newly modefied HDF file onto the drive you will be using in your Amiga.
Personally I use Linux disk editor. However you can use Win32-Disk-Imager or Winimage or something like that.

One little note.... I think you need to use an Amiga1200 with OS 3.1 in order to get the boot menu. I read it briefly on a forum, were the author of the software
mentioned this fact. If someone can verify that you indeed need a 1200 and 3.1 or just 3.1 alone, then please report back.

Happy disk writing.....