@sjanupa,
Rendering multiple charts in a page seems to be working fine at our end (without any overlapping of charts). You can also refer to this documentation page for a step to step tutorial on rendering multiple charts in a page.
But the each column two charts were overlapped each other.
Can you kindly create a JSFiddle reproducing the issue you are facing and share it with us along with the sample data so that we can look into the code, understand the scenario better and help you resolve?
—
Shashi Ranjan
Team CanvasJS