Subform with columns without Data field

Good afternoon.
Let me see if I can resume the thing.
I have a table DESENHO with ID_desenho (primary key) and NOME_DESENHO.
It as two 1>many relations to another table, CONJUNTO_DESENHOS, ID_DESENHO_CONJUNTO (primary key) and ID_FILHOS.
The goal is that the table CONJUNTO_DESENHOS store an Assembly drawing, and the small pieces (drawings also) that are used to make the Big drawing.

I have a Form with a MainForm with Content (DESENHO), in witch I make a filter to show just the Assembly drawing for populate with small drawings (Link master fields>“ID_DESENHO”; Link slave fields>“ID_CONJUNTO_PAI”).
I have a SubForm with Content (CONJUNTO_DESENHOS) with a Table control that I use to populate the chosen Assembly drawing.
In that Table control, I have one column (JUST_NAME) that is not part of (CONJUNTO_DESENHOS), so the Data field is empty.
My question is:
In that possible to read the value form ID_FILHOS (that is linked to table DESENHO) and from that table get the associated NOME_DESENHO, and write it to JUST_NAME, as a read only value?
Hope i’ts not to confuse!
Thank you very much!!

Perhaps something like SubForm source =
a SELECT CONJUNTO_DESENHOS.* – to be editable – + JOIN/WHERE to DESENHO?
[…] DESENHO.NOME_DESENHO
(?)

So, instead of the subform read directly the table CONJUNTO_DESENHOS, reads from a Query that joins the fields of both tables?

It may be… (?)
See @Villeroy 's General Recipe for the Filter Table method, e.g. on July 10 in

How to create a query between two dates using dates from a date box on a form and display results in a subform

+
my answer in

Come visualizzare direttamente la differenza nel formulario? (Soluzione Testata e funzionante)

This last shows it’s possible to get a calculated field AND a form sourced from a query to be editable.
REM: it may be necessary that you add manually the linking fields in the Properties Window.

But of course = just speculative!

Thank you!

Please take a look at
TesteEditavel.odb (15.6 KB)
If I understood your question… the subform has a read only = name of product and is editable.
I inserted the last 2 rows into Assegnazione
135 | p = 52 | m = 12
136 | p = 52 | m = 17

For due credits an reference: these tables are from Formulario casella scelta condizionata soluzione senza macro.