Hi, I just found this post. How come you posted this to your blog and not the Excel for All community? I nearly missed it!!! to post in the community, you need to be in the community and select new post. Then do NOT select post to blog. If you then want the post to also be visible on your blog, you need to resteem it, you can do that by using the little arrow-like symbol beside reply button at the end of your post. let me know if that makes sense.
This is a great trick by the way, nice share.
RE: Apply AutoSUM for Multiple Row and Columns in Multiple worksheets in Excel