Should You Hire A Salesperson For Your Agency? Hiring someone to sell your services isn't as easy as it looks. Here are some tips to keep in mind when looking for a BD person. Finding new clients is one of the most challenging aspects of running a service agency. Unlike other types of businesses where you can decide to spend X dollars on advertising this month knowing it will yield you Y amount of leads, agencies rely a lot on word of mouth and leveraging existing relationships.