Key spectral features to measure M_BH and σ_⋆ observable at each HARMONI band as a function of the redshift. Black solid and dashed lines correspond to emission (i.e. CIV, MgII, Hβ, and Hα) and absorption (i.e. CaIIH+K, MgI, and CaII) features, respectively. The low-resolution bands correspond to the wavelength range between blue (V + R), green (I + z + J), and red (H + K) rectangles. Purple (I + z), blue (J), green (H), and red (K) filled rectangles mark the wavelength range of medium-resolution gratings. Hatch patterns mark the high-resolution bands: purple, striped, inclined: Z_high; orange striped: H_high; red, striped; inclined: K_short; and red, dashed, striped: K_long.