Good morning, @Sheanmei! Hope your day is going well so far. I'm happy to explain 'include in use' for you.
As you mentioned, in the Advanced Option there's Include All and Include in Use. 'Include all' refers to everything in that given time period, regardless if that account or element had any activity in it. 'Include in Use' means that only the accounts that had actions in them during that selected time frame will appear.
Here's a great article that explains the customization options for reports: Customize reports in QuickBooks Desktop. Click on the arrow next to "Display" in that article to expand and read about those options available to you.
If you have any further questions, please reply to this post. We're happy to help. :)