an evdre can use just one application (specified as parameter), to work with several applications on the same report you must use several evdre, where each evdre work with a specific application.
The evdre function don't have appset as parameter, so it's impossible to work with different appset even with different evdre.
So you can create a report/inp. sched. that reads and send data on different application but not a report/inp. sched. that use more than one appset.
The EVDRE templates cannot access data from multiple appsets. The data cannot be shared within different appsets. An EVDRE can fetch data from different applications within the same appset. However, you will need separate EVDRE functions to fetch data from different applications.
Hope this helps.