The HLQ.CAVHJCL(DEFMLOG) JCL contains four allocation options. You pick the option that best fits your environment and delete the other three options.
The PROTMLOG file is just a VSAM file. So you just allocate the file at your site like you would any VSAM file. But you have to remove the EXTRA parameters.
The example below allocates the file on a VOLUME SUP010. So parameters MGMTCLAS($MGMT$), STORCLAS($STOR$) and DATACLAS($DATA$) was removed from the JCL before the JCL was submitted.
DELETE INTERT10.GA.PROTMLOG CLUSTER PURGE
DEFINE CLUSTER -
RECORDSIZE(128 4096) -
KEYS(48 0) -
FREESPACE(10 10) -
SHAREOPTION(2 3) )