Adaptive behavior in a form?

Keldyding 

To make the code a bit simpler, I would suggest that each section of the form be in a separate Section of the document - Form section 1 in Document Section 2, Form section 2 in Document Section 3, --- Form section 8 in Document Section 9, Form section 9 in Document Section 10, and you have the Nine check boxes in Section 1, with the Titles of the Check boxes being Section 1, Section 2, --- Section 8, Section 9.

Then, in Visual Basic Editor in the ThisDocument object insert the following code

Private Sub Document_ContentControlOnExit(ByVal CC As ContentControl, Cancel As Boolean)
Dim Secnum As Long
For Each CC In ActiveDocument.ContentControls
    If Left(CC.Title, 7) = "Section" Then
        Secnum = Mid(CC.Title, 9)
        If CC.Checked = True Then
            ActiveDocument.Sections(Secnum + 1).Range.Font.Hidden = False
        Else
            ActiveDocument.Sections(Secnum + 1).Range.Font.Hidden = True
        
        End If
    End If
Next
End Sub

Then, if you have the display of Hidden text disabled (Via File>Display) when you check any of the text boxes and exit from the text box, the code will format the text of the Section of the document for which the associated checkbox is checked so that the font is not hidden and for any Section for which the associated checkbox is not checked so that it is hidden and will not therefore appear.

Unfortunately, while a macro enabled workbook (xlsm) can be attached to a response, a macro enabled Word document or template cannot be attached.  If you contact me at dougrobbinsmvp[atsymbol]gmail[dot]com, I will send you the macro enabled template that I created to respond to your question.