Dear Support team,
Can I have your guidance how to setup in the profile manager of my Bootrunner 3 a bootable USB-stick at the startup of my bootscreen?
Is there also a way to simulate the ALT/OPTION-key to choose out of the Bootable devices at the Bootrunner bootscreen?
Sure. Just set up the external device as a custom setup:
See Boot Runner Volume VM Config in the guide: