Multiboot install medium proper Qubes Grub boot arguments

I have multiple isos on one partion for various boot usages. I’m curious if there’s anything I should change to make Qubes install properly.

menuentry “[loopback]qubes-4.1.2.iso” {
set isofile=“/boot/iso/qubes-4.1.2.iso”
loopback loop $isofile
linux (loop)/live/vmlinuz boot=live union=overlay username=user config components quiet noswap noeject toram=filesystem.squashfs ip= nosplash findiso=$isofile
initrd (loop)/live/initrd.img

Doesn’t matter. Doesn’t look like Heads supports installing Qubes from a multiboot usb formatted like this.