I’m not sure of the documenation officially, but you create a schedule in System Agent. Then on any report, there is a drop down that usually defaults to Now for Schedule. You click that drop down and select which schedule you want to run it on. Then the Recurring checkbox becomes available and you’d check that box to run it every time on that schedule (as opposed to just once). That’s it. You can choose to email it and select what type of file it generates (which I personally use the heck out of).
To delete them after the fact, you can either go to System Monitor and the Scheduled Tasks tab (which will show you yours only) or you can edit in System Agent under the Schedule that you set in Tasks panel.