In Pakistan, for legal documents we usually use our father's first names as our legal last names. But actual family names (surnames) are usually something different (usually tied to occupation or the village you're from).
I started off using only legal names as last names, but then realised it would be hard to merge with other people's tree's or find long lost relatives without using the actual surnames. So I was wondering if there was a way I could edit multiple people's last names at once? So I would select everyone in my immediate family and mass edit them all once to the correct surname, rather than having to do all of them individually, which is annoying as hell, as I've added over 300 people in my tree!!
