My instructor could not explain me.
Someone who supports the training has to know this. . . Might not be the "trainer" but someone has to know or there would be no vsam files n use. . .
Does each student create new files for their project(s) or are existing files to be used?
Is this work being done at some training institute or on-the-job. If on-the-job, the cics support people will know how this is done on your system.