The Assembly Assistant is being developed for two purposes:
An example for making a listfile: Assuming you have reviews of some kind, with filenames like rev-ande.cmp, rev-bert.cmp, rev-zzto.cmp, etc. Then fill in the from and to values of the Assembly Assistant with respectively rev-aaaa.cmp and rev-zzzz.cmp. Or you could split the list by filling in rev-aaa.cmp / rev-mmmm.cmp for the first run and rev-nnnn.cmp / rev-zzzz.cmp for the second run.