how can I make this shortcut in a combo box, see print, drawing package was created in access but cannot access the code, it is protected :(

Do you mean being able to type in a value and it autocompleting?

yes :)

Is the AutoComplete Property turned on?

To be clear, I did not create the attachment, I want to recreate it in my database of catalog cabinets. are here  videos of how we can create that selection list

I meant in your db not the one you shared.
Is it the list box on the left or the combo on the right?

combo on de right

So have you tried a simple form with a combo box bound to a table/query and tried to type in a known value?

if I type text that is in the list I get the result, but if I continue typing then the text just continues regardless of whether it is not in the list, text should then become gray if at the moment the text cannot be found . I have set up a routine to catch if the text is not in the list and add it if necessary.

' Ludwig Willems

Private Sub DepartementCombo_NotInList(NewData As String, Response As Integer)
    ' toevoegen van nieuw ingegeven item voor in lijst conbobox van tabel DepartementT
    
    If MsgBox(NewData & " Staat niet in lijst. Wil je deze toevoegen?", vbYesNoCancel, "Alcom nieuwe item") <> vbYes Then
        ' niet toevoegen
        Response = acDataErrContinue
    Else
        'toevoegen v nieuwe waarde in tabel van de string NewData
        CurrentDb.Execute "Insert into DepartementT (Departement) values (""" & NewData & """)"
        'update de combobox
        Response = acDataErrAdded
        End If
        
End Sub

What now follows is my next question: in the first appendix you have a list box on the left with titles on which all tables are hanging, each with many cabinets in it. If you click on one of the titles on the left, the combo box on the right becomes active with the necessary list of cabinet modules to choose from. Now how do I create this listbox with the titles of the tables, which ensures that the correct combobox is active on the right side of the combobox list.

no one has any idea how to approach this ???????

Cascading combo boxes?

Richard, yep, I'm already starting with that. Also check out the Search seminar and it should work out. Thanks :)