Hi Evans....note the You Tube Video Link
While I have not recruited specifically for Executive Chefs, I have found that the best way to find out about any career is to go online and ask. There is information out there that will tell you what people do in certain careers, other sites that might describe a typical day in the role, jobsites with openings and job descriptions as well as salary ranges for the positions, etc. YouTube may have videos explaining the same. If you look at multiple sites, look for consistencies in what they say. This should help you feel more comfortable that the information you are reading is accurate.
I used Google and typed in your question. Here is what I found so far to get you started.
Hope this helps. Feel free to reach back out.
Executive Chef Job Description, Salary and Career Information
Work experience is the most important requirement for executive chef positions, though a bachelor's degree in culinary arts or a related hospitality field is recommended; associate's degree programs are another option. Voluntary certification is available from the American Culinary Federation.
American Culinary Federation
American Culinary Federation. The American Culinary Federation, Inc. (ACF), a national professional organization for chefs and cooks, was founded in 1929 in New York City by three chefs' organizations: the Société Culinaire Philanthropique, the Vatel Club and the Chefs de Cuisine Association of America.
Here is a You Tube Videa as well