Need Help With Setting Shared Folder Security Permissions

[BaconIT83]

Recently a user accidentally deleted shared files in a network folder. I changed the security permissions so that users only have "read" and "write" access. I tested it and it prevents users from deleting files. The problem now is, each time a user saves the shared excel workbook. A .tmp file is created that does not go away after the user is done and they just keep piling up when users work in it unless I delete them. It didn't do this until I changed the permissions. Is there a way to keep these .tmp files from being created in the folder every time a user saves the file, but still keep them from deleting files in the folder?

 

[theravager]

try using creator owner permission and assign it approriate permissions. This will let the owner of the files the ability to delete their own stuff

 

[BaconIT83]

I set special user permissions on a folder, and allowed the modify, read, and write permissions, but set deny for the delete subfolders and files. After I applied these changes, I had users that were not able to open the shared workbook to update data. They received an error message that the file was read only or encrypted.

If all of the other permissions were set for allow, with the exception of full control i left blank and I set deny for the delete subfiles and folders, why would users no longer be able to access the excel workbook?