Stopping Windows 10 from changing boot order

Hi all:  I have always used MBR boot partitions, but now we will be upgrading to new desktops and I am now experimenting with Secure Boot imaging.  I have a new image created and figured out how to apply secondary images as well (use partition 4).  However, Windows 10 is changing the boot order in the UEFI, moving PXE boot to the bottom of the list.  This really sucks as I count on all my computers booting into PXE first.

I need to CONVINCE Windows to stop doing this.  Is that possible?  If it is not then I will have to give up on secure boot and go back to MBR instead.

Thanks for your time, Chris.