How do I tell BookyAI that two characters are married, enemies, or boss and employee?

With the Relationship Network. Open a book, click "Codex" above the chapter list, and go to the Relations tab (you need at least two saved characters). Each relationship reads like a sentence: pick who, pick whose, type the kind — wife, husband, boss, employee, friend, enemy, mentor, rival and so on — and optionally add a nuance note like "estranged for ten years". Save, and every chapter the AI writes keeps interactions true to the network: how characters address each other, what they know about each other, how they react. The tab also draws a live map of your cast so you can see the whole web at a glance.