If I understand your question correctly, you want certain fields on your form
to be visible when a checkbox is checked. Try this code in the form's On
Load event:
If Me.CHECKBOX = True Then
Me.FIELD1.Visible = True
Me.FIELD2.Visible = True
Else
Me.FIELD1.Visible = False
Me.FIELD2.Visible = False
End If
You will need to change CHECKBOX to the name of your checkbox and FIELD1 to
the name of the field you want to make visible, etc. Add on as many fields
as you need.
If you want to have the fields actively change visibility based on a
checkbox on the form then add this same code to the checkbox's After Update
event.