Hi
You will need to have access to the source code or ask the programmer who designed the software. Either way, you go into the report designer and pull up the report form (checks form). Under the file tab, select page setup, print setup. Select the printer you want and assign the defaults you want such as the tray, orientation, etc. and click save. Then the important part is go to the report tab and check off the printer environment option. This will save the printer environment settings to that report. In summary you set tray 2 as the default tray under the print setup for the specific report, then save the printer environment with the report.
HTH
Mike