Okay. In that case, a visual representation of how a firm intends authority, responsibility, and information to flow within its formal organizational structure. It usually depicts different management functions (accounting, finance, human resources, marketing, production, R&D, etc.) and their subdivisions as boxes linked with lines along which decision-making power travels downwards and answerability travels upwards. Also called an organizational chart.
You can make the chart easier to understand for subordinates and the reporting person. Clearly mention the name of the employee followed by the designation. If the designation is not filled, then just apply the designation only. Make sure the alignment is proper and the boxes should be sized according to the levels.
Make the top level bit highlighting so it can be easily recognized. If project engineering holds the same level, you can fix it in one single box itself. No need to mention it as separate if they hold the same designation.
The level plays a significant role in the chart. Hope this will help you.