Unable to locate fields in Microsoft Access

Question

I'm building a Contact list based off of the Contacts Template in Access. There are some calculated fields listed in the Field List that aren't present on the table itself. All I want to do is modify how they're calculated, specifically "File As" and "Contact Name". Does anyone know where I can modify the formulas used to calculate these fields? (Screenshot below)

Answer 1

You will find both those fields in query Contacts Extended.

Answer 2

A more general solution:

Open the form properties, tab Data.

There you find the form Record source (the query the form gets its data from).
Click the ... button at the right to open the query design.