For installing different OS's you can make an dedicated boot USB-drive or you can use Ventoy.
Ventoy is an open source tool to create bootable USB drive for ISO/WIM/IMG/VHD(x)/EFI files.
With ventoy, you don't need to format the disk over and over, you just need to copy the ISO/WIM/IMG/VHD(x)/EFI files to the USB drive and boot them directly.
You can copy many files at a time and ventoy will give you a boot menu to select them (screenshot).
Got to the download page en choose your archive type to download.
Before you install ventoy see if the USB-drive is empty. The install will destroy all data on it.
Extract the archive and run Ventoy2Disk. The USB-drive will have 2 partitions when the installer is ready.
What to upload?
ISO's for OS installers or live distro's.
Rescue tools and specialmaintanance tools.
Hiren’s BootCD PE (Preinstallation Environment) is a restored edition of Hiren’s BootCD based on Windows 11 PE x64. Given the absence of official updates after November 2012, the PE version is currently under development by the fans of Hiren’s BootCD. It features a curated selection of the best free tools while being tailored for new-age computers, supporting UEFI booting and requiring a minimum of 4 GB RAM.
Go to the download page and select the ISO.
Copy the iso to the iso partition.
Go to the website for the OS you want and download the iso.
Copy the iso to the iso partition.