Dashboard - Seeking ability to provide a search function


I am working on solution with several hand offs. The owner of the business process is different from the group that kicks off the process using a form submission.

I would like to provide an option for the submitter to be able to look up if there is an existing row prior to submitting a new form.

Initially, I wanted to use a dashboard as a landing page to include both the form and report view. Is there a way to have an interactive widget so the user can check if there is an existing line item before submitting a new form?

Is there another approach that would lend better to this use case?