This content was released on Apr 7 2020. The official support period is 6-months from this date.
Review the multiple window paradigm in iPadOS and start to set up the app to support multiple windows by configuring the project in Xcode and updating the Info.plist.
This is a companion discussion topic for the original entry at https://www.kodeco.com/9310902-ipados-multitasking/lessons/1