How can I use Disney characters legally?

Hello there, I'm interested in using Disney characters in my business or project, but I'm not sure how to go about it legally. Can you tell me what steps I need to take to ensure that I'm not infringing on any copyrights or trademarks? Do I need to get permission from Disney directly, or is there a licensing process I can follow? I'd appreciate any insights you can provide on this matter. Thank you!