Is the standalone Preferences app too much "manually" for you?
It is working fine for me from 10.6 to 10.12.
Ronald posted a link for the editor some time ago: http://www.emaculation.com/sheepshaver/ ... rPrefs.zip
When using the OldWorldROM which you will want for MacOS 7.6, you may reboot your Mac from another volume via Control Panels - Startup volume.
Not really recommended maybe, but working on my side.
Did you find H-Norwegian of your desired OS already?
The Mac Anthology covers a few H flavours, 7.5.3, 8.0 and higher are there.
My favourite 7.6.1 is missing in Norwegian sadly.
Let me know in case a H version should be added for you at Macintoshgarden.org.