Hi, in my survey I ask the user whether they studied at a university or not.
If they choose yes i want them to be able to add (one or more )universities and fill in details about it (the full name , the year in which they graduated etc ...)
Is this possible ?
I allready found out the conditional part , so if they choose yes they can fill in information about 1 university. But now I want them to be able to fill in the information for as much universities they want.

thank you in advance !

All you need to do is setting up a sufficient number of questions. You can use question groups, set up all question for university 1 at a question group and then use group export/import to create copies for up to X universities.
You may also want to add a question like "At how many universities did you study" and let the user input a number from 1 to X (you should set a max value based on the number of created group). You can then use conditions to show group 2 if the answer is >1, show group 3 for > 2, ...

Simply copy your details question set for as many universities as possible and ask "How many universities have you attended". Then you can use relevance or conditions to show the appropriate number of details question sets.

If you need unlimited number of universities, you could setup a second survey, which receives url-parameters from the first survey and that has a link at the end for looping and filling more universities.

Thanks for your help everybody ,
is their a quick way to copy an entire goup ? I tried exporting a group to lsg and then importing it at survey level but it does not accept lsg files ...

Export the group (as you have done), then "Add new group to survey" --> "Import question group".