Starting with the theoretical considerations of our previous papers [1,3], some practical aspects concerning the shift procedures of rheological data are analysed. The latter can be used for the construction of both isotherm and isochrone master curves as well as of master surfaces, with the condition of experimental verification of the validity of the time-temperature superposition principle. Thereby any empirical shift procedure is omitted. Examples are presented for a very large frequency-temperature range, including the glass transition zone.