When you start the Cefaly Software, the following window appears.

It is the main window, representing the different possibilities of the software. You can either collect data from a Cefaly device (new or existing in the database) or consult the history of records for a patient.
If you connect a Cefaly device that was previously connected and therefore attached to a patient's profile, a window similar to this one will pop-up:

If you want to readdress the device to another patient (and therefore click on the 'Change data file' button), or that the device has never been connected to your PC, the following window will appear:

In this form, you can either select an existing patient from the drop down list in the bottom or enter the information (first name, last name and birth date) for a new patient in the part above.
If you wish to consult some data from a patient, you can get these data by clicking on the button 'Consult history of a patient (without device)'. This will open the following window, where you should select the patient in a drop-down list of available patients.
