there are several options for this, you can do it in your sql query or in the table of your report.
One way to do this within your sql query is by using a case statement that puts P or F or some other value in a field to designate if the scheduled date is in the past or future. You can use the getdate() function to make the determination within your Case statment. Once you have the field in your dataset, you can filter your table on the value.
There are several other ways to do this as well. The above is just one example.