There's a configuration doc out there somewhere but I can't find it. So, here you go;
1. Login to UCCX OS Admin, under Settings > SMTP... you must configure SMTP Host. The host status should display 'available' if Ok.
2. Login to UCCX Admin, under Tools > Historical Reporting > SMTP Configuration... and then enter your SMTP Server Configurations. Depending on how Exchange was deployed, some of these fields may or may not be applicable - please check with your Exchange (Outlook) Team for guidance.
3. Assign reporting capabilities to the user(s) via UCCX Admin > Tools > User Management > Reporting Capability View.
4. And finally, login to CUIC by entering the same URL as your UCCX server but this time, specify port 8444. Once you login, look on the left pane - select the Scheduler tab. Click 'Create'. My advice, the Schedule Name should be meaningful, easy to understand and distinguishable from other scheduled reports - perhaps, using the name of the report as the Schedule Name might help (i.e. schr_WeeklySalesQueueReport).
This should be the minimum to get this up and running. Of course, there's a bunch of other stuff that you could or should configure as well but give this a shot and let me know what happens. Good luck.
