multiple fermatas

What’s the best strategy to notate multiple fermatas in a single bar?
Here is a VERY famous exemple.
Thank you very much.
Stefano Rabaglia

Create a playing technique that looks like a fermata to use on the first G. Do you need any help creating a new playing technique, or are you acquainted?

So I will learn how to create a new playing technique. I saw some tutorials.
Thank you very much.

I think that for this very same example, I used two hidden tuplets in order to reproduce easily the notes values and spacing