Complex sentence: Briar is co-heading the B'wa Kell with Foaly's technological rival, Opal Koboi, head of Koboi Laboratories, manufacturer of most of the LEP's equipment.
Split into simpler sentences: Briar is co-heading the B'wa Kell with Foaly's technological rival, Opal Koboi. She is head of Koboi Laboratories, the manufacturer of most of the LEP's equipment.