Restrict height/width of the div frame with Intercom Chat

I have a pretty interesting use-case.

I am trying to install Intercom Chat Support. However, instead of installing it for the entire site or covering the entire page, I want it installed only on a certain area / range of the page.

For example, right now Intercom is installed on this entire page. But, I want it installed only on this smaller part of the page.

Any ideas on how to do this?

Here is my site Read-Only: LINK