The ACF2 Installation Guide says that CAISEC00 should be in SYS1.PARMLIB. Can we put that member 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. Make sure that you only have one of the CAISECxx members as the first one found will be used.