Something like that is normally not done by showing Hp2, simply because the Hardware doesn't allow this. - It requires rewiring of the signalling system. If there was a faulty switch the would be "Langsamfahrsignale" (Lf1,2 and 3) not Hp2. The Option of showing Hp2 for a track you would normally enter with Hp1 is only available for tracks in the Station where you can select a shorter overlap.