Partition External SSD for Carbon Copy Cloner and Winclone Backups

I want to use an external 1TB Thunderbolt 3 SSD to make Bootable Backups of both Carbon Copy Cloner for a macOS Mojave partition and a Winclone 7 Backup for a Windows 10 64 bit Home Boot Camp partition. How do I format the Boot Camp partition on the external SSD to make it bootable?