In the past when I've wanted to try out a new macOS version in beta, I've created a disk partition and installed it there. But with AFPS it asks me if I want to do a partition or create a new volume. I'm not quite up on the distinctions with volumes vs partitions and just wanted to ask, what should I do here? Proceed with a partition as I have in the past, or is there an advantage to using a volume instead now that I'm using AFPS? I would just like to be able to boot into Mojave to mess around a bit without affecting my main High Sierra install.