In reply to andrewmcleod:
Thank you andrew for you advice.
I have been scouting the internet for assisted belay devices and gone to a test evening at a gym.
I have found and felt the Climbing Technology: click-up/Mammut: Smart/Petzl: GriGri2/AustriAlpin: Fish/Beal: Air Force 3/Edelrid: Eddy/ Camp: Matik and the Trango: Vergo.
I (own preference) think that the smart and click-up and fish are the best indoor belay device for people starting out and the safest way to prevent accidents indoors.
I liked the trango vergo the best, It was hard to get used to in the beginning (it was new to the instructor).
It has to be used horizontal to give out, and if it blocks when giving out you have to squeeze it together.
The grigri2/Eddy/Matik are all the same, easy to use but if not used the right way, can be used wrong.