How do I transfer my Prime membership to another device?

Hello there! I'm curious about transferring my Prime membership to another device. Could you guide me through the process? I've been trying to find the right steps online, but there seems to be a bit of confusion. Is there a specific app or website I should use? Also, will all my previous purchases and settings be transferred over automatically, or do I need to manually set them up again? Any help would be greatly appreciated!