Hi Experts, What is the purpose of this checkbox. Any example or anyone have used it please guide as not much information or example available in documentation.

I'm not sure if you already got the needed information. By the book, this is the definition: Check this box to use accounting period dates for the depreciation journal entry. This is applicable if you are not using calendar months for the Period Format. When not enabled, the depreciation will use calendar months. At the company I work for, we have this preference checked, the depreciation journal is created based on the accounting period, for our accountability this is crucial