End user application
One of the most simplest ways to run merge projects is to do it interactively in the end user application. This is the application where you created and edited your project.
In order to do this, you need to open the application and the project you want to merge. In the toolbar, click on the button Merge.
Once you have merged your project, you can see in the log that the document(s) is created. You can open them with your system PDF reader by double clicking on the document.