Assign customers to salespersons - Zoho Invoice

Assign customers to salespersons - Zoho Invoice

Hi, I am new to this application and I am not sure if this application suit me as an owner of a company with few staff.I am looking an application that allow me to assign group of customers to each individual salesperson which then allow them to do estimates and sales order for their assigned customers. Besides, salespersons can only view invoices and owing of these customer rather than other customer which have been assigned to other salespersonn; whereas me and my admin can view and manage all.

Your help is very much appreciated, thank you.