Request for Customer Event Speaking Process Documentation and Templates

Does anyone have a doc you are willing to share that outlines all the steps (and who is responsible for them) for customers speaking at events? We need to document the process and roles as we have had some confusion recently - I'd love to see how you all are handling it and if you have any good template examples I can share with my org. I'm talking soup to nuts, from identifying the requirements for the customer down to sending a thank you gift afterwards. TY!