This is not a tutorial or deep explanation of every new API. It is a sample APP. To get anything out of it you will need to download the New API Features 22.1 app and read through the notes (click Notes link in top banner) on each page and also the code comments. If you haven’t installed APEX 22.1 yet you can use apex.oracle.com. First install the tables needed by this APP. Install Sample Interactive Grids app to get the EBA_DEMO_IG_PEOPLE and EBA_DEMO_IG_EMP tables. This will be fun because you get to use the new App Gallery. From SQL Workshop Utilities/Sample Datasets install Tasks Spreadsheet to get the EBA_TASKS_SS table.
Reminder: Any forward looking statements I make in this blog or the sample app is just my opinion not an official statement of product direction.