When you are creating a curriculum, there are two fields available – ‘Curriculum Start Date’ and ‘Curriculum End Date’, in the ‘Step 1’ of the process wherein you can define a specific time period until which the curriculum will remain visible and accessible to learners. If the learner hasn’t managed to complete the curriculum before the specified time period is over, then the curriculum expires. They no longer have the option to view or access the learning contents that were a part of the curriculum.
Keep in mind that once the curriculum start and end dates have been defined and the curriculum is assigned to a learner, they can no longer be modified anymore.