The event positioning is specific for every view type and it cannot be modified.
Basically, the day/week view, which I believe is shown in the screenshots, is designed to position events one under another if their common duration is longer then the slot that holds them. This behavior is expected and cannot be altered.
The only solution in this case is to write a custom view
where you can take control over the event positioning. Please note that custom implementations fall out of the scope of the entitled support service.
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