What is an entry point for exe published to Microsoft Store?

Question

Hi all,

As I understand from several sources I am allowed to publish my EXE package to Microsoft Store.

But in this case what will be an entry point to my app? Let's it was installed by a user via Microsoft Store and now he clicked the Open button inside store, what would be run in this case? How Microsoft selects it? Is there some way to say what an exe to run on Open?

Thanks.