As an employee, the supplemental benefits offered to you have been pre-determined by the company. Their choice of whether or not to offer you certain benefits will determine if you are eligible. If you are eligible for supplemental benefits, you will receive this information about this during onboarding.
Please note that because your supplemental benefits are offered by third-party providers (healthcare, travel insurance, etc.), they may take some time to reach out to you with your specific policy information.