Companies and self-employed individuals can join the Sentinel Partner Program. The program is designed for businesses, with enrollments made through the company only, ensuring the correct invoicing and other necessary processes are followed. A company can enroll multiple employees, allowing them to become certified installers and expand business opportunities. For individuals, the program offers opportunities as well, with self-employed installers eligible to join and execute installations under their own name. Companies are recognized as Gold partners, trusted for their expertise, while Silver partners are individual installers executing installations.