Hi, 

I know that there are different scenarios regarding how each company run it's business. No one is working the same way like another. 

So, If I am developing a sales management application i.e. How would I know the business requirements for my application to cover? Should I meet a huge number of sales business owners and hear from them about their problems and their needs? Or should I just see the exists sales management applications in the market and create something like them? 

What is the best way to get the required analysis which covers a good number of users requirements?