Hi,
You can do this in various ways:
one option is to have a first Normal Screen, where you place the fields and based on Button Action, you can do the processing(select data) and display the data in a second Normal screen(as a Table control), it depends on the Business Requirement.
Another Option is to do everything in one Normal Screen, to have Selection fields above and table control below to display or modify the data.
Subscreen - you can embed the Subscreen in a Main Screen and it does not have ok_code.
Regards
Sajid