(9)The manager of the ELTIF should determine the percentage referred to in Article 18(2), first subparagraph, point (d), of Regulation (EU) 2015/760 either on the basis of the redemption frequency and the maximum length of the notice period, which represents the notice period, including the extension of the notice period, if any, or, alternatively, on the basis of the redemption frequency and the minimum percentage of liquid assets. In both cases, the manager of the ELTIF may consider introducing a notice period as part of the redemption policy. To facilitate the calibration of the liquidity parameters by the manager of the ELTIF and the effective supervision by the competent authority, the linear approximation should be used to determine the maximum percentage of assets referred to Article 18(2), first subparagraph, point (d), of Regulation (EU) 2015/760 where the redemption frequency or the notice period do not correspond to the parameters set out in the calibration tables provided to the manager of the ELTIF.