You can see that the information imported via the append function is transferred to create a new case and corresponding event. All that remains to complete the record is to select the Source for case identification.
Notice that the record selectors at the bottom left show this is Case 2 of 2 for this Episode of Care. Those just above it show that this is the only Event associated with this Case. It's a subtle feature in Microsoft Access. But once you understand it, it becomes quite useful. In the live application, clicks on the forward or backward arrows walk you through the records.