Neural Network Time Series, Multiple Inputs, Multiple Sequence input format

[jrosvold]

I cannot figure out the proper format to pass to a narx net for a dataset that I have. Please excuse my choice of variables but I have "n" inputs and "m" datasets with "i" samples in each set;
I start with a numeric input matrix of size (i, n, m) and a target matrix of size (i,m).
I'm sure there's a simple answer out there but I would really appreciate if anyone could help me out because I am banging my head against the wall with this one!!!

I know I need to convert the num's to cells and do something along the lines of what they've done here:

https://www.mathworks.com/help/nnet/ug/multiple-sequences-with-dynamic-neural-networks.html

But I can't figure out how to make that work with multiple inputs.

Thanks!!!