financial model with different scenarios

An effective financial model:
is easy to navigate and modify;
calls out the assumptions (inputs), calculations (throughputs), and pro forma financials (outputs); an is based in reality and easy to implement…
You want to be able to change dates, expenses and amounts. And then the model should automatically project based.
-Making dates, expenses name and amount changebale
2-Creating summary for cashflow, key expenses using either pivot tables or any other relevant tool
3-Have scenario analysis where we can how cashflow can turn out in different scenarios.