Is possible to see in which machines have you signed in and you are using your licences.
If you detect
You can access this information either from the Personal data menu and from the licence details.
In the Personal data menu, you can see the machines where you are using a user named licence.
To block a machine:
Go to the Personal data menu.
Click on the machine you want to block. You will access the machine detail.
Click on the Block machine button. Is not possible to block the current machine that you are signed in with right now.
To unblock a machine follow the same steps and click on the Unblock machine button.