In Cosmolex, you can limit user access to certain reports so when the user logs in they will only be able to see those specific reports under the Reports Tab.
Go to Account Management > User Management tab > User > then select a User > Edit
In the edit user window, click on Settings (Role and Restrictions).
When restrict report visibility is checked, you can select which reports they are allowed to view.
Once done, click Save.
When the user logs in, they will only see the report/s that you allow them access to under Reports Tab.