From LimeSurvey Manual
To administrate your LimeSurvey installation, click on the Configuration button located on the top toolbar of LimeSurvey's main page:
This tab contains five options with which you can customize your LimeSurvey installation:
You can also customize your LimeSurvey installation from config.php. For more details, read our wiki on LimeSurvey optional settings.
The Users tab contains options related to the users and participants' management. If wish to offer different survey or/and global permissions to your employees/helpers, you have to create users to whom you allocate permissions. For an easy management, the users can be grouped into user groups. The central participant database (CPDB) contains survey participants who are allocated to more than one survey or/and are shared with other LimeSurvey survey administrators. Three options are located under the Users tab:
You may find under this tab options that are nor users- or settings-related. They contain functionalities that could help you improve your survey or your LimeSurvey installation. These functionalities are: