[M/S’s 1 & 9] are the  Primary [What-if] Model Segments in the easy-to-learn-and-use FastBooks Solution Business Service-Based Business Model.
[M/S -9] contains [yellow highlighted cells] formatted for entering [data]. A principle design structure throughout the software is only [yellow highlighted cells] are formatted for entering [data]. All other cells are protected, and cannot be changed or altered in any way. Therefore; entering incorrect data is the only possible mistake or error a user can make when using FastBooks Solutions Service-Based Business Software as the organizational “Set of Books.”
The best first step to quickly gain a basic understanding and appreciation for the business purpose of [M/S -9] is to review the  images below. The first image populated with the [simulated-business-data] contained in the Practice Software.
The second is an image of how [M/S -9] appears before populating any [data] in the software. Take note of the protected cell coordinates designed to display calculations or information appear as blank cells. Displaying cell coordinates not requiring a calculation as a blank cell is a principle design structure throughout the software to by design limit the [number of numbers] displayed in each respective software segment. For example; cell coordinates designed to display actual vs. forecast better or worse calculations will appear as blank cells when the software does not contain a future forecast.Left click on the image above to open an enlarged image in a new tab.
Click the link to open [M/S -9] in an Excel file:Left click on the image above to open an enlarged image in a new tab.
The real value in FastBooks Solutions “essential” for any service-based business is in Software Segments [9-10-11-12]. The four integrated segments are designed to be utilized as an easy to use mathematical tool to assist business managers to measure, compare and evaluate the employees who sell their business revenue generating services. These software segments include easy to understand graphical reports to help both management and the employees had better understand their individual performances and goals in relation to the entire team.
The graphical design of segments [10 and 11] are intended for the use of performing periodic employee performance reviews with the employees who sell business services. Another important and unique functionality feature included within the scope of the  associated software segments is easy to implement and understand [optional] employee performance incentive program.