Hello @LOVE_SAA,
you can always overwrite the autoexec and even the config files, with the -autoexec and the -config paramenters in the command line, but I would like to advise to be careful with that options.
You can also deploy a new BatchServer, in the same SASApp, and change the configuration of autoexec and config over there.
Bear in mind that the default config will include the config of the upper level, SASApp config.