Abstaining from using table in solver for workforce scheduling?

I'm wondering if there's a way to skip making a table for workforce scheduling using solver.
For example:

In a file called Postal.xls which looks like this:

http://s1.postimg.org/epuyh3f7z/a_SDF.png

A table exists to total how many workers are available each day, I was wondering if there was a formula to calculate how many would be in each day rather than devise a table everytime I would want to do something like this.