Within companies, the Test Engineering department is responsible for identifying, developing and installing test systems that will be used by other departments in the organization. The head of the Test Engineering function is therefore typically the main influencer when considering the purchase of Proligent.

Other than the Test Engineering department, the different departments that use (or that are impacted by) test systems are:

1. R&D, who design new products and build the first prototypes
2. NPI, Process & Quality, who optimize manufactured products' quality, cost and throughput
3. Production, who create, assemble, repair and perform tests over manufactured products
4. Maintenance & Repair, who troubleshoot, repair and revalidate products under warranty