How do Buddhist replace a dalai lama after they have passed away?

When a Dalai Lama passes away, Tibetan Buddhists believe that the next incarnation, or tulku, must be found through a spiritual search process. High-ranking lamas and officials consult prophecies, conduct rituals, and look for signs to identify the reincarnated Dalai Lama. Once potential candidates are identified, they may undergo tests to confirm their identity, including recognizing objects belonging to the previous Dalai Lama. The new Dalai Lama is then officially recognized and installed, continuing the lineage of spiritual leadership.