Windows 10 laptop with USB stick boot something?

I have to delete my hard drive with the program DBAN. I pulled the program on a USB stick and now my problem is that in the BIOS I can't select that the PC should start on the Usb stick.

Here is a picture of my BIOS under BOOT.

What do I have to do to make it work?

You have to select the USB stick in the first place and not the Windows Boot Manager

Why so complicated if you can't handle it?

https://www.bsi-fuer-buerger.de/BSIFB/DE/Empfehlungen/RichtigLoeschen/DBAN/dban_node.html

Either select "Boot Option # 1", if there's not the desired inside, select "Addnew Boot Option".

How to do it, is in the screen below right (assuming the picture would be right around)

Look in the manual of your PC or motherboard, if there's a boot menu in your UEFI version, which can be opened at PC start by pressing a certain F-key.

To your picture: Since not everyone creates a headstand, you should do it better by right-clicking on the image file by 180 degrees to "turn to the right" or "turn to the left".