When you add events/items to the calendar, they default to "Personal" library, which can't be seen by anyone other than the person who created it. This makes the calendar item pretty useless if you're creating items for the public/learners to see. What makes this worse is that the library can't be changed after the item has been created. Also, the option for selecting the library, that has to be done upon creation if you want anything other than "Personal," is quite hidden inside a drop-down. This makes the whole process really inconvenient and not at all intuitive.

This feels like a bug but when I submitted a bug ticket I was told that this is by design. All these issues together, especially the fact that you're not able to change the library of the item once it's been created, add to the inconvenience and non-user friendliness of this. If you're going to default the item to be created in the "Personal" library and hide the selection of a library inside of a dropdown, please allow the item to be changed to a different library after the fact just like it works for assignments, etc. 

Thanks,
Sarah