How to use AddToAny to share parts of posts and not the post URL?

Hi:

On my site I use AddToAny in the floating mode on all posts like this: https://shobhaponnappa.com/content-marketing-editorial-calendar-a-template-to-follow/

But I want to know how to add these share buttons to parts of posts and not the full URL eg. on my AskMe page I might like people to share one of the answers I have given to some questions people ask me. How do I allow people to say Tweet about that question and answer part alone?