I need to know that users are authenticated and using the application at the moment. How do I do?

Table Users show only "Last_Login".
Hello Diogo,

I don't believe you can control this at Users table level. You don't log in to an application, you login against a user provider, so even if you know the user is authenticated, you dont know how app it is logged in.

I would create some logic to store in a extended table the login information 
(you can use Session Start event). If you want to log information about all apps, create a separated application with public actions (there are a system entity Application, it can be useful).

Best regards,

Thanks André,

The problem is solved.