I have highlighted the mistake in red:
Private Sub SiteSelect_AfterUpdate()
Me![Address] = Me.SiteSelect.Column(2)
Me![AssignedTechs] = Me.SiteSelect.Column(3)
If Me.SiteSelect = "Brandon, MB" Then
Me.Dispatch2.Visible = True
Else
Me.Dispatch2.Visible = False
End If
That is referencing the first column, site ID. To reference the second column, contaning the text value, use Me.SiteSelect.Column(1)