The case worker can navigate to an assessment determination for a product delivery case as described in Assessment Determinations.
A determination covers the full lifetime of the case (as known at the time the determination was made - the case's lifetime may have subsequently changed and a newer determination recorded). The determination is open-ended because the case itself is open-ended, so the latest decision for this determination applies until further notice.
The determination is divided into a number of contiguous "Coverage Periods". Broadly each coverage period is a period of constant eligibility, entitlement and explanation for a determination.
For each coverage period, the system shows the eligibility result for that period, and a summary of the amount payable. This coverage period data is standard eligibility/entitlement information and the Engine ships with a standard screen for displaying this information for any CER-based case. You should not need to write your own coverage period screens unless you have special requirements.