Currently, GDDDR is following the HEC (Pakistan) policies regarding Turnitin Originality Report and Plagiarism.
Zero tolerance Policy on Plagiarism issue. GDDDR aims for original script having 10 or below than 10 % Turnitin Originality Report.
HEC relevant Web links:
How to Interpret Originality Report (Guidelines)
Guidelines on 'Ethics of Using Turnitin' for Administrators
Guidelines on 'Ethics of Using Turnitin' for Instructors
HEC Plagiarism Policy
Plagiarism Little Book