After everyone seems to have gotten over the thrill of the additional Maternity Leave credits, came the questions centering on "How much?" and "How to?" 
Thankfully, my friend and CHRP classmate, Deb R. came up with the Expanded Maternity Benefit Calculator! Very clever and thoughtful! 🙂 
It works so much like the tax calculator. Just click on the link below, enter the base salary including allowances, and it automatically computes everything else for you.