Why is 'Edit' enabled on company-paid enrollments during Open Enrollment? (shouldn't allow)

Hello,

Our employees have company-paid life and company-paid disability. On the open enrollment screen, within one Grouping (Company Paid Life & Disability), the disability is allowing disenrollment (incorrect) while the life plans are not (correct). We want to show the enrollment but not allow the employees to disenroll in both.

Does the enrollment formula (automatic or default) control this? Where do I find where the disability benefit is keeping an option open for enrollment when that isn't how the plan functions?

Thanks in advance, Wendy.