I believe that in the initial stages of business, you can effectively conduct business even alone, to be honest. Yes, of course, with the development - I want to transfer some responsibilities to the hired employees, but here you need to carefully choose people so that there are no problems in the future, you understand. Personally, independent work helped me a lot, and to date, I have studied many things, from how to connect Virtual PBX. And before the elementary closing of the transaction with the client.