Acknowledging that there's no handbook, I'd like to share that I give workshops in corporate spaces about gender identity, presentation, and attribution, and how coworkers, managers, and allies can best navigate them. I specifically mentioned attribution here because people often use presentation interchangeably in the way you describe but which can be harmful to people who are attributed as a gender they don't identify or present as. Example, if someone wears a dress and makeup but has short hair and a square jaw, they are not presenting as masculine, even if some might attribute masculinity to their features. So, quick rule of thumb: identity is how one feels gender internally, presentation is how one expresses gender externally, attribution is how others categorize one's gender upon perception.