The ACF2 Installation Documentation says that CAISEC00 should be in SYS1.PARMLIB. Can that member be put in one of the concatenated libraries in LOAD00 or part of the MSTJCL00 DD?
Yes, it is ok to put CAISEC00 in one of the concatenated libraries in LOAD00 or part of the MSTJCL00 DD. Note that the first CAISECxx member found will be used.