So you can check out how to add an icon here
If View Expressions is a column in your data that populates that table, then you can add the icon as noted above and set the column type to Button. However, you may want to do the following:
Add a modal to your canvas somewhere and set it to true in the Hidden field for that modal.
Then in the View Expressions column you can run a script like yourHiddenModal.open()
In that modal you can add the information from the selected row.
Check out this post as well