Hi there thanks for commenting in our community! There are a few ways to change the layout in our Org chart. Under layout style you can change the vertical and horizontal spacing and overall structure of the cells.

Notice how the higher you turn up horizontal and vertical spacing the more room there is between employees. You can adjust this as you please.

If you would like to stack the employees you should be able to double click on the employee and four red dots appear. Once they appear you can move or adjust the employee to where you would like them on the canvas. 

I hope this helps you design your org chart! For more information on org charts take a look at this Org Charts article from the Lucidchart Help Center.