If I try to create with the second option selected, I get an error and then I'm unable to create using any other option
When the "Course Period" option is selected and the chapter does not end with the course, a new chapter should be created starting the day after the previous one ends and ending on the last day of the course, with the lessons distributed across the chapters.

Example:

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Completed
Bug & Fixes
10 months ago

Caroline Conte
Get notified by email when there are changes.
Completed
Bug & Fixes
10 months ago

Caroline Conte
Get notified by email when there are changes.