adding firmware to flash tool on mac

so I've been trying to root my sony z3 compact. i have managed to find the proper firmware downgrade and downloaded flash tool to my mac. All of the guides i have read online were for use with a pc. They will always say to drag the firmware file into the flash tool folder on the c drive. Well i don't have a c drive and have tried searching for folders with the name flash tool and nothing has come up. What am I doing wrong here