If you are getting the error Function Not Available to this Responsibility. Please check with your system administrator then follow the below steps
Step 1. Navigate to System Administrator Responsibility > Profile > System
Step 2. Query for profile ‘Utilities:Diagnostics’
Step 3. At the ‘Site’ level give value as ‘Yes’
Step 4. Save and retry and users will not get above message, and they will be able to navigate to Help >Diagnostics > Examine