You can use the Parks-McClellan algorithm to design optimum, linear-phase, FIR filter coefficients in the sense that the resulting filter optimally matches the filter specifications for a given number of coefficients. The Parks-McClellan VI takes as input an array of band descriptions, each containing information describing the response you want for the given band. The VI outputs the FIR coefficients along with computed ripple, which is a measure of the deviation of the resulting filter from the ideal filter specifications.
Four VIs use the Parks-McClellan VI to implement filters whose stopband and passband ripple level are equal: the Equi-Ripple LowPass VI, the Equi-Ripple HighPass VI, the Equi-Ripple BandPass VI, and the Equi-Ripple BandStop VI.