Why am I unable to create reports for certain modules?
You will not be able to create reports for certain modules if:
Your administrator hasn't given you permission for the module for which you want to create reports.
The module (tab) for which you want to create reports is hidden. For instance, if you want to create reports for leads, you need to ensure that the Leads module is enabled. To enable this module, see Organize Tabs
In such cases, you will get the error message, "Insufficient Privileges to perform this operation. Contact your Administrator."