[copyrite]

#1:
How would I go about batch converting multiple author fields?

i.e.,
from
J. R. R. Tolkien & C.S. Lewis
Fred Flintstone & Barney Rubble
to
J. R. R. Tolkien; C.S. Lewis
Fred Flintstone; Barney Rubble

(exchanging the & for a semi-colon)

#2:
How can I batch convert multiple author fields
from
Tolkien, J. R. R.
Lewis, C.S.
etc

to
J. R. R. Tolkien
C.S. Lewis

Thanks!