Thanks for reaching out with your questions about Crio Pro WordPress theme page headers and footers.
Crio uses custom page templates that allow you add page headers, sticky headers and footers. I think this guide should be useful, it goes in depth on customizing header and footer templates in Crio and includes a video created by our community manager Jesse to help guide you through custom/header footer configuration
I hope this helps! Please let us know if you have any other questions for us.