n chart shows relationships among people: who is accountable for the completion of specific work, and who reports to whom.

It seems like you're referring to an organizational chart. An organizational chart, also known as an org chart or organogram, is a diagram that visually conveys a company's internal structure by detailing the roles, responsibilities, and relationships between individuals within an entity.

Here are the steps to read an organizational chart:

1. Start from the top: The highest-ranking person such as the CEO or president is usually at the top of the chart.

2. Follow the lines: Lines connecting the boxes represent the chain of command. A solid line shows the direct reporting relationship while a dotted line shows a secondary or indirect relationship.

3. Look at the levels: Each level of the chart represents a level of hierarchy within the organization. People on the same level are usually of the same rank.

4. Understand the departments: Boxes are often grouped together to form departments or teams within the organization.

5. Read the titles and roles: Each box of the chart includes the title and often the name of the person, providing a clear picture of who does what in the organization.

Remember, an organizational chart is a powerful tool for understanding the hierarchy and structure of an organization at a glance.