Evolution of the active star fractions using different activity indicators from the lower RGB (ν_max ≥ 100 μHz) to the medium RGB (ν_max < 100 μHz) and the HB (on the right-hand side of the vertical dashed lines). Blue bars and arrows correspond to low-mass stars. Orange bars and arrows correspond to IM stars. Bottom panel indicates in addition the fractions of active LM (green bars and arrows) and IM (red bars and arrows) stars computed over the whole RGB without discriminating between the lower (ν_max ≥ 100 μHz) and medium (ν_max < 100 μHz) RGB.