I haven't tried with this tool but you should be able to do that by increasing your Samples per prompt to a high number. I do that with a command line interface with a different branch. As of yet, that function doesn't work with save to grid which is what I'm looking for. Wake up to many 12-image grids. I can wake up to 100+ of images though just by increasing the number of images generated per prompt. Got 101 the other night and then upsacled the 4X in the AM.