parallel execution

Dear all
we have a input schedule which calls a scirpt logic
the script logic in turns cals stored procedures. the execution is taking too much time than expected.

after reading scn blogs, we got to know about *XDIM_PACKAGEBY keyword which helps parallel execution.

Is it possible in BPC 7.5 version in MS version.
I treid to add this keywork, but it is not validating.
please advice

thanks and regards
Prasad