I have just reviewed the tutorial and your product seems like a fit. However, I did not see where expenses can be adjusted at certain periods. For example an adjustment when one spouse dies or an adjustment for another reason in the middle of the plan. Does this software provide this feature?
There are a couple of ways to do this.... to model retirement expenses in periods.
The software combines the Retirement Income Goal projection at the Inflation Rate both on Other Assumptions, with anything you enter under Special Expenses. So you could have a $50k of income at 3% inflation, but for example have a mortgage that does not get paid off until 5 years into retirement. In which case enter a Special Expense starting at the retirement age, say 65, with Duration 5 years and that mortgage expense will end in 5 years.
Second method involves entering $0 in the Retirement Income Goal field on Other Assumptions and then not using that at all. You then go to Special Expenses and model each "period" using one line per period. So enter say line 1 "Retirement 1st 5 yrs" and enter $50k and starts at 65, Duration 5... this will repeat that $50k expense from 65 to 70. You can set the inflation rate on there too.
Then line 2 might be "Retirement 2nd 5 yrs" and enter $45k and starts at age 70 and Duration 5 years, etc. In this way you can break retirement up into as many "periods" of variation as you want, and of any duration.
Does this help?