This is the root aggregating project of the composite project. It combines other projects in a single workspace using includeBuild directives located in settings.gradle.
Use New > Subproject actions of the Jmix tool window to create new or add existing subprojects to the composite project.
Alternatively, you can include subprojects by adding relative paths to them to settings.gradle. For example, the following instruction includes a project from the modules/users subdirectory:
includeBuild 'modules/users'