Streaming live at 10am (PST)

Share section to Facebook, Twitter, etc... with specific OpenGraph

Hello, I hope everybody’s doing great.

I’m having a slight slight issue with my website, that is:
-When I share to facebook, using the following link
https://www.facebook.com/sharer/sharer.php?u=http://flexiplen.com.ar/notas#duele-el-cuerpo,
The link pulls up a share without the webpage OpenGraph, also I would like to know if I can set an OpenGraph image to each different section, so when you share one section of the webpage it shows a specific image for the section.