How do I create a 1GB FAT32 partition from my Mac HDD?

I am making an attempt to create a small FAT32 partition which I can use to switch recordsdata between my Macintosh HD partition and the Home windows Bootcamp partition on my Mac.

I am utilizing Huge Sur. I’ve gone to Disk Utility and clicked ‘partition’ when ‘Fusion Drive’ is chosen on the left.

That is the display I get:

When FAT32 or ExFat is chosen as the brand new partition format, I’m unable to alter the scale of the quantity. It is caught at 360GB, and I solely need 1GB.

I do not need to mess around with this with out understanding it, as a result of it is harmful.

Does anybody know what I must do to have the ability to create a smaller partition?

EDIT:

My mannequin of mac: iMac 2019.

Output of diskutil record:

/dev/disk0 (inner, bodily):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *1.0 TB     disk0
   1:                        EFI ⁨EFI⁩                     209.7 MB   disk0s1
   2:                 Apple_APFS ⁨Container disk2⁩         878.0 GB   disk0s2
   3:       Microsoft Primary Knowledge ⁨BOOTCAMP⁩                122.0 GB   disk0s3

/dev/disk1 (inner, bodily):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *28.0 GB    disk1
   1:                        EFI ⁨EFI⁩                     314.6 MB   disk1s1
   2:                 Apple_APFS ⁨Container disk2⁩         27.6 GB    disk1s2

/dev/disk2 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +905.6 GB   disk2
                                 Bodily Shops disk1s2, disk0s2
   1:                APFS Quantity ⁨Macintosh HD⁩            18.5 GB    disk2s1
   2:              APFS Snapshot ⁨com.apple.os.update-...⁩ 18.5 GB    disk2s1s1
   3:                APFS Quantity ⁨Macintosh HD - Knowledge⁩     520.7 GB   disk2s2
   4:                APFS Quantity ⁨Preboot⁩                 397.5 MB   disk2s3
   5:                APFS Quantity ⁨Restoration⁩                626.4 MB   disk2s4
   6:                APFS Quantity ⁨VM⁩                      2.1 GB     disk2s5

/dev/disk3 (exterior, bodily):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *1.0 TB     disk3
   1:               Windows_NTFS ⁨TOSHIBA NEW⁩             1.0 TB     disk3s1