When the form appears, it should kick off action. So you'd enter the action in your system. Re: where to put the form, there are two choices: 1) If it's part of a project, I suggest making a folder for it, and putting the form there (even if it's alone). Or 2) if it's a "one-off" action, I put it in an "Action Support" folder (some people use a *labeled* shelf in their stacking shelves - I like the 2nd from the top). If you're new to this folder, you can code actions (e.g., "AS") to remind you where it goes.
Finally, when you've completed the action, toss the form, or file accordingly.
Hope this helps.