Modifying dd parameters

//MYJOB JOB 1,NOTIFY=KC03H09
//MYPROC PROC
//STEP1 EXEC PGM=IEFBR14
//DD1 DD DSN=KC03H09.ZZ0.ZZ0,
// DISP=(NEW,CATLG),
// SPACE=(TRK,(5,2,1))
//SYSPRINT DD SYSOUT=*
// PEND
//STEP2 EXEC PROC=MYPROC
//STEP2 EXEC PROC=MYPROC
//STEP1.DD1 DD DSN=KC03H09.ZZ0.ZZ0,
// DISP=(OLD,DELETE,DELETE)
//SYSIN DD DUMMY