How to create Multi-Boot Flash drive (UEFI & Legacy All In One)?

We need:
1. One empty flash drive minimum 8GB for two iso files.
2. Minimum one ISO file.
On my case I will use 2 iso files - Windows 10 Pro and Linux Knoppix 7.2. You can download its from intenret.
3. Yumi Software for creation Multiboot Drive - Link for download: pendrivelinux.com/downloads/YUMI/YUMI-2.0.7.0.e…

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What is KNOPPIX®?
KNOPPIX is a bootable Live system on CD, DVD or USB flash drives, consisting of a representative collection of GNU/Linux software, automatic hardware detection, and support for many graphics cards, sound cards, SCSI and USB devices and other peripherals. KNOPPIX can be used as a productive Linux system for the desktop, educational CD, rescue system, or adapted and used as a platform for commercial software product demos. It is not necessary to install anything on a hard disk. Due to on-the-fly decompression, the CD can have up to 2 GB of executable software installed on it (over 9GB on the DVD "Maxi" edition).