Populate one form from a database when a custom action button is clicked

Populate one form from a database when a custom action button is clicked

I am creating a database for a small school library.  I have created a custom action button for each record called "checkout".  When the button is clicked the CheckOut Form pops up in a new window but it is empty.  I would like the form to pop-up with the information of the record from which the button was clicked.

For Example:

If a teacher wants to check out the Book "The Red Pyramid" she can search the list using multiple criteria.  Once the book is found she can click on the "Check Out" button.  The CheckOut form then pops up in a new window.  (Currently all of these things are happening.)  What I would like to see is the form "CheckOut" popping up with the information on "The Red Pyramid" already filled in as that is the record she found.  And that is the record containing the "Check Out" button she pushed.

Is it possible to do this?