[AngelicaDeAlquezar]

Sembrar/meter cizaña is not only to cause trouble. It's to make people fight among themselves by telling gossip, revealing secrets, talking behind someone's back...

Cuando me iba a la fiesta, vino mi hermano a meter cizaña. Le dijo a mi mamá que reprobé el examen y ella ya no me dejó ir.
When I was leaving for the party, my brother came and stirred things up. He told my mother I had failed the exam and she wouldn't let me go then.

Por fin me quedé con el empleo de Juan. Estuve sembrando cizaña hasta que creyeron que me acosaba.
At last I grabbed Juan's job. I worked up things around until they believed he was harassing me.