Translations:Manage user groups/75/en
From LimeSurvey Manual
Adding a user to a user group
As mentioned above, adding a user group behaves like a macro function that simply adds all the current members of the user group, easing the process of granting survey permissions. However, if a new member is added to that user group, that member will not automatically receive the rights that were previously granted to the other members of the user group. Therefore, you will have to repeat the steps shown in the example from above in order to grant him or her the same rights or you just add him or her separately, using the Add user function (from the 'Survey permission' panel).