FIR filter delay for multistage multirate filter

I know that a FIR filter with N taps has a delay of (N -1 ) / 2 samples.

If this filter decimates of a M factor, the decimated signal has a delay of (N - 1) / (2 * M) samples.

I used this approach several times to calculate the exact delay of a FIR filter, when I know the number of taps.

How can I calculate this delay if I design my filter using the vi "DFD NStage MRate Filter Design"?