The Application properties screen allows you to override the way some properties like project name, version, and manufacturer are determined.
By default, these properties are determined automatically from the differences between the two snapshots (by analyzing the installed software, ARP entries, etc.). For some setups, you may want to use custom properties which differ from these automatically gathered characteristics. Another use case would be if the repackaging is done without an actual setup, but only with a manual file copy operation. Then the automatic routine is unable to determine them.
In any of these use cases, by unticking the checkbox Determine application data from true state (snapshot / installation) the user is able to enter these details manually, and they will be taken over by the comparison engine and put directly into the output project file.
When ready, press Next > to go to the scanning options.