How to add more IPA symbols along with their position in a Graph in an existing template

[cupidlucid]

Hi
I have two questions:
1. How can I add more IPA symbols to this existing temple along with their plotting.
2. How can I add more speakers data in the same template.
The supporting video link is as under:
https://www.youtube.com/watch?v=NzrFbnRdfjo

I wrote many times to the Author/ creator of this video and templet, but he never replied, Very sad, but i am thankful to him for uploading this video.

The template is in the description of the video.