It depends on who is initiating the divorce.
If the husband initiates the divorce then the proper procedure is to return her to her nearest brother (male cousin), and include the agreed $ at the time of their wedding. It's typically $2,000.
If the wife initiates the divorce, she typically goes to her nearest brother (male cousin) and asks him to arrange a meeting with the husband's clan to inform them that she is divorcing their son/brother.