You need a keycodes file to have SheepShaver support keyboards other then with the default layout.
A file called "keycodes" file is included in the recent download for SheepShaver http://www.xs4all.nl/~ronaldpr/sheepsha ... 120211.zip
. I'm assuming you already have it from your download, but if not, just download that latest version.
You can use the Preferences editor to browse to the keycode file at "Use raw keycodes". See the tab Miscellaneous and please refer to the setup guide under heading "5 Configure preferences in Miscellaneous tab"
Then start SheepShaver:
Fonts are placed inside the Fonts folder in the Mac OS System Folder. When you drag and drop the font files on the icon of the closed folder called "System Folder", Mac OS will suggest to put them in the correct folder.
Mac OS Keyboard layouts can be installed in the same way, when dropped on the closed "System Folder" icon, they are placed in the folder called "System" inside the "System Folder"