Hello sonntagc, and welcome,
The quick answer is "not quite". The naming of the export file in desktop Modeler has to be fixed - e.g. "detail.xls". You can't dynamically change it to "my report.xls", unless you use DataPump/Automator.
For the rest, you can quickly prove the concept yourself by building a project using the Classic.prn sample file and Lesson11.xmod, define a couple of exports and then save the project.
Then re-open the project, File/Open/Report, select the report you want to use instead, e.g. ClassFeb.prn, and run the exports. Again, this will take a few clicks on the desktop, I'm afraid.