Need Help creating an org chart in excel using cells and formatting not smartart

Help, I need to create an organizational chart.  I downloaded a template from Microsoft templates called Org charts (visual) (it has 4 different org charts.  2 using smart art and 2 only using cells & formatting see the instructions below:  

Use to show hierarchical information or relationships in an organization. This does not utilize SmartArt and is created with only cells and formatting.  

All I want to do is add another box or level for my org chart but do not know how to create a new box.  Can someone help.  I have attached a photo of the template. Thanks, Tina