To change the start time of a View backup, you would use the following JCL:
//XXXXXXXX JOB ...
//SARINIT EXEC PGM=SARINIT
//STEPLIB DD DISP=SHR,DSN=VIEW.CVDELOAD <=== MODIFY, IF USED
//SYSPRINT DD SYSOUT=*
//SYSIN DD *
After a run of SARINIT, to change the parameter, you will need to do a recycle of the SARSTC task, for the parameter change to take effect.