On Nov 29, 2019, at 15:18, Michael wrote:
>> If you have room on your main disk and it is APFS-formatted, you can easily
>> create a new volume in Disk Utility that will share the free space, and if
>> it doesn't work out, you can delete the volume later.
>
> I'd like to know how to get two volumes to share free space if they are on
> the same physical disk.
That's simply one of the features APFS offers. If your disk is APFS formatted,
open Disk Utility, in the toolbar where it says "Volume", click the "+" button,
name your volume, and click Add. All APFS volumes in a container share space.
