Yes, you can do it by uploading a csv with the list of users.
First, you must check that all users are registered on the platform. The most recommended thing is that they do it themselves through the platform, because by regulation they must accept the privacy policies. Alternatively, the administrator can register them from the back office in Daily management> Users> Create new user.
To register numerous users, you can use a CSV with the list. In the Course editions section, click on the three-dot button in the actions column and select "Enrollments by CSV".

Now you can upload the CSV file with the list of emails of the users. These are the characteristics that the file must have to do the import correctly: