To register the drive and password in the Bios, run these command as administrator for each disk needing to be stored in Bios:

C:\>manage-bde -protectors -disable C:
C:\>shutdown /r /t 0

After reboot:
C:\>manage-bde -protectors -enable C:

To use Quick Assist in Windows 11, press Ctrl + Windows logo key + Q to open the app, then select “Help someone” or “Get help.”

Share the 6-digit code with the person you’re assisting, and once they enter it, you can view their screen or take control if they allow it.