No you don't have to install freeserve for each user. I recommend you set an Administrator account which you control and set everyone else with limited accounts. This will mean they can't un-install/install programs without your permission.
How to watch the World Cup for free on TV and online
Meet Superfiction, the little design studio with a load of character
Best Mac buying guide 2018
Comment résoudre les problèmes de connexion internet d’un iPhone ?