we gave permission to create/edit files in one of the synced subdirectories to 3rd person. Permission was given with standard GDrive option in web interface. 3rd person doesn't have Syncdocs installed.
This person uploads files in given subfolder and Syncdocs downloads them on our PCs without any problem.
However, by some reason some (or even every) of these 3rd person's files are duplicated in the root directory on PCs and we can delete them only through GDrive web interface in the 'Recent' folder.
Here's how it looks:
Step 1. GDive of Google account 'User1', synced by Syncdocs:
/ — root folder
/folder2 — Google account 'User2' can create and edit files/sub-folders here. User2 uploads (creates) file '1.docx'.
/ — file '1.docx' created here (duplicated). The owner is User2 (it's seen in a properties).
/folder2 — file '1.docx' exists here too.
Step 3. User1 deletes '1.docx' from the root only. This file stays in sub-directory folder2 (this is what is needed).
Step 4. File '1.docx' is downloaded over and over again by Syncdocs in the root. But it is not present in the root folder if we check the GDrive in a browser.
Step 5. The only way to delete this duplicated file from the root directory is to delete it from the 'Recent' of GDrive (by User1 or User2).
Sorry for my english. :)