what is the best/easiest way to transfer a farcaster account to another custody address? is there a doc or tool for this?

The best and easiest way to transfer a Farcaster account to another custody address would be to contact the customer support team of Farcaster and ask for their assistance in transferring your account. They will be able to guide you through the process and provide you with the necessary steps to complete the transfer. There may not be a specific document or tool for this process, but the customer support team will be able to provide you with all the information you need.