I was able to solve this issue by referring one of the demo example project Welcome !\Axes\Opaque zones. I got the clue about this example project from one of the other similar post in this forum.

Thank you,
kraj.

Hi, I am using Teechart for plotting frequency and time response. For frequency response there are 3 options: Gain response, Phase response and Group response. All these are placed in one chart. These uses custom axes. With gain axes, user can set the custom frequency and gain values. So we have to ...