You'll need to use the Query Builder tool. The query will look something like this:
Select *
from CI_INFOOBJECTS
where SI_INSTANCE = 1
There's another field that you need to filter on that will pull only the "recurring" instances, which are your schedules. However, I don't remember what the name of the field is or the specific value you need and I'm on a client site where I don't have access to Query Builder. To find it I would find a report that has a low number of instances, at least one of which is recurring - make note of the date/time of the schedule. Add "and SI_NAME = '<name of your report>'" to the end of the query above and look through the properties. Find the recurring schedule based on the date/time. Then look to see what fields are different between that report and one of the completed instances. The field you're looking for contains a 1-digit number and I think is named something like SI_SCHEDULE_STATUS.
-Dell
A computer only does what you actually told it to do - not what you thought you told it to do.