2 Benefits Screening
Search for all improvements and differences between the defined scopes. If something is equal in all alternatives, you do not need to calculate it because it will be zero. However, if your intention is not only to do a business case, but a Total Cost of Ownership analysis in the same time, you add all.
Give the possible benefits short definitions and write them in the Benefits column. In column Definition & Formula, you define both why you consider it is a benefit, and how it will arise. You also use buttons 'Alt-Enter' to do new lines within the cell, and add a clear formula how to calculate the value. The formula has a special guideline how to define it, but more about that in the coming RBC handbook.
Remember, is should always be the same as in the calculation's annual columns to the right in the sheet. Define clearly what the variable is.
During the analysis, fill in with data in the 'Notes column'. See more instructions directly in the tool and its example template, but in short tell: Information data, Source of information and data, Risk descriptions, Dependencies, Open Questions, and your own Notes.
Also, define what reliability category each row and benefit can be considered to have - Reliable, Visible, Assumed, Not Estimated. More about that also in the coming Handbook, but read some more on this web site's page about the method.
Eventually, you calculate your benefits value as cash flow occur. Remember you rarely can expect benefits to occur the same year as you implement a larger IT solutions.
As a last thing to do, is to add a 75% reduction in the 'T2M' column to the very right in the Benefits Screening Sheet. That is only used when you have calculated time savings based on minutes and hours, rather than Full Time Employees (FTE's). The method defines 'Portions of Time Savings' (SPOTS) as not only always reduced 75%, but also always in the Assumed category.