It's quite sensible to desire the help of those other capable adults because they can take some of the burdens of the business off your psychology doctor in chennai shoulders. However, from both a business viewpoint and from the human relations viewpoint, it's best to have a clear understanding with each of them as to what kind of things they will and should do (answer the phone, open mail, pack and ship merchandise, etc.) and what they definitely are not to do make payments to people without your authorization, make agreements, deals or contracts without asking you). Such advance agreements can avoid a lot of aggravation and make everything go much more smoothly.
You must realize that there will be some (charming) complications to running a business from home and one of those complications is when a fairly small child answers the phone for a business call. "No, this isn't the Smith child psychology doctor in chennai Company, this is my house" may throw a business associate calling your "office" for a loop, temporarily. Most people react quite graciously to this, but it does point up the advantage of having a business number that rings only in your work area.