Frow within windows:
Enum things

PS C:\> bcdedit /enum "{fwbootmgr}"

Set order
** DANGER!!! --> Make sure you use Guids ONLY from above command. If you splatter
** {bootmgr} guids into fwbootmgr you MAY CORRUPT YOUR BIOS.

PS C:\>  bcdedit /set "{fwbootmgr}" displayorder ...

Replace '...' by the GUIDs of configurations listed in enum step in whichever order you want.