I created the following test scenario on http://ovigpl340.koblix.org :
Creation of a group: filetesters
Creation of a user : nickname = demo01 and password = demo01
The file manager is activated for the filetesters group with all options checked:
When logged in as user demo01 I click on I click on the File manager link in the User's section and get the File manager page where I see the group folder for the group filetesters. The letter G on the folder icon means that as user demo01 I have access to this folder, but I am not the manager of this group. This will restrict my possibilities in the usage of this folder.
I also have the possibility to create a folder using the Directory field and Create button at the bottom of the page. So I create the folder demo01-private-folder. This new folder has no letter on its folder icon, meaning that this is a private folder for user demo01.
When I click on the name of the private folder demo01-private-folder the filemanager opens this folder and I can now use the Upload link on the menu bar to upload a file. I uploaded the files contacts1.txt and contacts2.txt and both appeared on the file list for the demo01-private-folder directory.
When I now click the Delete button (icon) on the contacts1.txt line, this file disappears from the file list.
After clicking the Trash link on the menu bar I get the Trash page on which I see my deleted file. When I check the checkbox before the file contacts1.txt and click the Delete button, the file is permanently removed.
May be this kind of documentation by example is a better approach. Feel free to replay it on site http://ovigpl340.koblix.org !