This article will show you how to enable a dynamic lookup on a form. Enabling a Data or Element Lookup will place a button adjacent to the element on the form and call the configured API (application program interface) when clicked to return form data.
Instructions
Navigate to Forms and select the form you wish to add the lookup to

Go to the Builder tab

Select an element

Under the Advanced section of the element, toggle on Enable Data Lookup or Enable Element Lookup

Select one of your configured Lookups from the list

If needed, customize the Lookup Button

Click Save

Click Preview to view the updated form

The element will now include a lookup button

Note:
This will be disabled until the input contains a value.