Setting up a contingent bequest involves several steps. First, identify the primary and secondary beneficiaries. Then, determine the conditions under which the contingent bequest will take effect. It's important to specify these conditions clearly in the will to avoid ambiguity. Finally, consult with a legal professional to draft the will or update an existing one, ensuring that all legal requirements are met. This process will guarantee that the contingent bequest is both legally sound and aligned with the testator's wishes.