You can decide yourself, who is allowed to view your documents and edit them, respectively.
To do this enter the document area vie the button in the upper context menu.
Select the documents or folders in the navigation tree on the left, for which you want to edit the rights. When you determine the rights for a folder, these settings are applied to all documents that are inside this folder.
Now you can determine, who is granted which rights concerning the documents, by clicking on the button .
If you select a group all members automatically gain the determined rights to the documents. These rights remain valid as long as they are a member of the group.
When creating a new document, this document automatically inherits gains all the rights of the folder it is created in. Furthermore the creator automatically gains all rights concerning the document. However, if the rights of the superordinate folder are changed at a later stage, the rights of the contained documents do not change automatically. Nevertheless you have the possibility to click on the button to overwrite all rights of the documents in the folder. But pay attention: the rights of all subordinated documents and folders will be completely overwritten.