Restrict Upload Size for a shared Folder
All you need to do is
1. Select the folder that you need to share
2. Click on close on the dialog that appears
3. In the manage share dialog that appears, Click on the “Allow Selected Users”
4. Select “limited” under “Upload Size Limit(KB)” Section.
5. Enter the upload size limit in the textbox.
6. Click on “Update”
Your shared folder allows upload only till the upload size specified