As stated earlier, DefaultCase is responsible for determining eligibility/entitlement within one legislative period. The calculation of the isEligibleTimeline attribute is covered in detail in the Inside the Cúram Eligibility and Entitlement Using Cúram Express Rules . For the simple product, the DefaultCase rule class must be extended to derive the eligibility timeline. The class representing an objective type will typically include the derivation of an isEntitledTimeline attribute, specifying under which conditions the claimant is entitled to the objective.