you need to merge chapter2 into chapter1. use the finder to show the files inside the chapter1 app and the chapter2 app in 2 seperate windows, and drag all the files from the chapter2 app window into the chapter1 app window while pressing on the option key, then choose to merge the files.
there are screenshots in the Ergi installation guide.pdf, or you can ask in the ergi discord server if you still have problems with merging.