Because the structural differences between exFAT and FAT32 are significant, there is no "magic button" to convert exFAT to FAT32 without data loss. The "AOMEI exFAT to FAT32 converter" effectively functions as an advanced formatting tool that forces the FAT32 file system onto drives that Windows restricts.
Remember: Always keep a backup. File systems can change, but lost data is forever.
Click "OK" and then click "Apply" (the green checkmark in the top toolbar).