Perhaps you are referring to what Alfonso meant in his earlier response?

"If, on the other hand, you mean that you would like to reconstruct individual-subject ICA maps for other subjects (other than those included in your original ICA analysis), then the way to do this would be to go to Setup.ROIs and click on the 'ROI tools. Add network-ICA ROIs' button. This will add a new weighted-ROI that represents the group-level spatial maps computed in the group-ICA step. Using these network-ROIs as seeds in a new first-level analysis that uses multivariate-regression measures will produce the same individual-subject ICA maps as those computed in the back-projection step, and this can be applied to the same or other subjects (not necessarily those included in the original ICA analyses)."