Just contacting an agency is not enough. First, you need to define which tasks the agency should handle. Then, consider several different companies, study their offers, and submit applications to those that best suit your needs. During the application or the first consultation, make sure to state your goals clearly. These could range from just needing help interviewing to a full-fledged search and selection of candidates. After the consultation, assuming there are no further questions, you can conclude a contract with the agency. The agency will begin searching for the first candidates within three working days.