Adding Multiple Monaca Backend Collection Items at the Same Timely

When you want to create a staff list using your collection as a simple DB

Multiple JSON data (collection items) in a certain format Is there a way to register on one additional screen?

For example, the quiz app
introduced at the monaca introduction seminar, etc. There are cases where you register 500 quizzes at once.
Do we have no choice but to think like JSON?