In CE it is called "View-On-Demand", you set this up as a user-right within the CE environment.
One proviso, before you offer this on some or all of reports - you should test all your RPT files with your DBA monitoring Database performance to ensure that none of the RPTs are resource hogs.
Then consider things like parameter limits so the users can't select MEGA Reports (eg. - detail every transaction for the last five years) in the "View-On-Demand" method.