Help file for service task item.

I have a service catalog item that creates a Task.

In the Tasks area where it list the task to complete, the check complete button and edit assigned to button is there.

Is there a way to add a custom Help box button there?  Like a square with a ? mark? 

 Where I can add a document or hyperlink to a help file.

The task link that is created doesn't offer a hyperlink option or a automatic "attach a file" .   

I could put a button or a hyperlink with the individual tasks, that would open a word document that would show instructions on how to complete the task.