How many employees at a certain hour

I still feel as if someone may come up with a simpler answer, however in the meantime you could move the 'helper' table and the tabulations so that it is all being handled without seeing the 'helper' table. As they often say on Food Network, presentation is everything. Here is the file again with the tables moved around and the helper table copied down to row 100 to give room for expanding the workforce: Copy of Libro1 (time ranges spanning midnight).xlsx
Let me know if you have any questions.