How to execute steps based on condition

1).Executing the steps based on the COND:

//FSS045AB JOB NOTIFY=&SYSUID
//* EXECUTING STEPS BASED ON THE COND **/
//S1 EXEC PGM=IEBGENER
//SYSPRINT DD SYSOUT=*
//SYSUT1 DD DSN=FSS045.RATNESH.PS2,DISP=SHR
//SYSUT2 DD DSN=FSS045.RATNESH.PS3,DISP=SHR
//SYSIN DD DUMMY
//S2 EXEC PGM=IEFBR14
//SYSPRINT DD SYSOUT=*
//DD2 DD DSN=FSS045.RATNESH.PS300,
// DISP=(NEW,CATLG,DELETE),
// DCB=(LRECL=80,RECFM=FB,BLKSIZE=800),
// SPACE=(TRK,(10,10),RLSE)
//S3 EXEC PGM=IEFBR14,COND=(00,LE)
//SYSPRINT DD SYSOUT=*
//DD3 DD DSN=FSS045.RATNESH.PS400,
// DISP=(NEW,CATLG,DELETE),
// DCB=(LRECL=80,RECFM=FB,BLKSIZE=800),
// SPACE=(TRK,(10,10),RLSE)
//S4 EXEC PGM=IEFBR14
//SYSPRINT DD SYSOUT=*
//DD4 DD DSN=FSS045.RATNESH.PS500,
// DISP=(NEW,CATLG,DELETE),
// DCB=(LRECL=80,RECFM=FB,BLKSIZE=800),
// SPACE=(TRK,(10,10),RLSE)