What are the occupations of greg heffley's parents in Diary of a wimpy kid?

In the "Diary of a Wimpy Kid" series, Greg Heffley's father, Frank Heffley, works in the field of advertising, while his mother, Susan Heffley, is a homemaker who also has aspirations of being a writer. Their occupations play a role in shaping their personalities and parenting styles throughout the series.