How to run a jobs in override library?

how to run a jobs in override library?

production jobs can exhigute in override library.
For This First we Have to do Fetch The job in to override library then change to override jcl.

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After logging in to ca7 in ca7 command line give jcl
then an pannel is open and it contain fallowing options

 1.Function:__________
       The options in this are
         Add
         upd
         Fetch
         Replace
         List
 2.Jobname:___________
 3.Dsn:_________
 4.Id:_________

In Function give Fetch,give the jobname and
give id as 254(this is standred for override library) Fress enter
it shows fetch function success.
then go bact to pannel by pressing f3
then in function give replace(To Change to override jcl),
jobname, id press enter it shows replace function
success.
Then to cheque the job in override library again go back to pannel
give list(To cheque) in function and press enter
then automatically display jobname and id as 254