Details for individual users on the People Page can be populated from different sources, below is a breakdown of where this information comes from and how to confirm. 

Creating user profiles on the People Page

Currently, there are two ways to create users on the People page. The first is manually creating the user from the People page ( the article here walks through that process ). The second is through a connected Identity Provider (Google Workspace, Okta, Office365, etc.). 

Validating Where Information is Pulling From

To see how a person was made and to determine where information like Start/End dates, emails, or job titles are pulled from, you can do so by clicking on a user's profile on the people page, then hovering over the 'i' icon on the card that appears on the right-hand side of the page: