In layman's terms, what is the simplest way to split part of an omnibus into its own separate book? I've already googled and found different (and confusing) ways to do it, and I have no idea which is the best or the easiest to learn so I thought asking here may be the best way forward.
I hardly ever mess around with any book metadata unless I have to and usually just accept them as they are, but with omnibuses I've decided that I would really, really prefer to have the book I want to read separated into its own book but have no idea how to do it.
(I wasn't sure which would be the right forum for this discussion, so I went to the general forum)