Thanks for reply.
Following the very tricky installation guides I managed to install the Function Manager app through an URL to Windows Store mentioned in a text file. That was after I had tried to install LIFEBOOK Application Panel following your URL but hit the wal with a "must sign in on a device with MS account" (device is on the MS account!?) error.
Anyway, now I can launch a Functin Manager app and in there click LIFEBOOK Application Manager that open a Application Panel where I can control the shortcut and the ECO (on F9) buttons. That was possible after downloading "LIFEBOOK Application Panel - Button Configuration for ECO button, Shortcut button" and click the URL, which apparently install scripts for those buttons.
I still can't control Mic (on F2) nor mouse-icon (on F6). I hve downloaded FTS_MicMuteUtility and FTS_PointingDeviceUtilityforPrecisionTouchpad and tried to install (following a 3rd method by the way, you have to run a preinstall script in CMD with admin rights) but I get:
The DISM log file can be found at C:\Windows\Logs\DISM\dism.log
failed to install
Exactly how do I get the hardware on this expensive laptop to work?
Further, how can Fujitsu in 2020 provide such un-userfriendly software in general / why is there not just a simnple straight forward installation the sets up a tool with everything ready to use??