I don't think it is possible for us to create an action that is specific for each cell on a column. If you wanted to send the selected cell value to a URL, that is possible (like you would send a product name to an instance of the Amazon website on your dashboard). So, I will pass that on to the Tableau team.
However, I have tried to turn your requirement on its head to get to the attached. Can you have a look and see if this is what you were looking for?
Rank_dashboard.twbx.zip 35.7 KB
Thanks Siraj! But in my current dashboard i will need everything to be in one sheet. Cannot have separate sheets for each Subject.