Hi,
You can get most of the information you want on efficiencies by clicking on the "Brewhouse Efficiency" button inside of the recipe you are working with. A dialog will pop up and allow you to enter your actual numbers in from your brewing session (if you recorded them) and will then calculate a number of different efficiencies including your mash and overall efficiency on your actual batch.
There is a help file associated with that dialog which explains many of the terms. If you have additional questions, just let me know!
Brad