I use semafors 36 on the 15m and semafor 144 (36x4) on the 1hr (15m x4) and semafor 576 (36x4x4) on the 4hr (15m x4x4).
This gives you an idea of how support/resistance is playing out across the three TFs (15m, 1hr & 4hr).
The White, Orange and Grey ZZ lines also show the same Sup/Res across the three TFs.
Xard777