When customizing the member TAUZCAPP in the hlq.MFA.EXEC dataset, Micro Focus recommends that you first copy it to hlq.MFA.CUSTOM.EXEC. This dataset is already added to the SYSEXEC in the relevant template JCL. Copying it will prevent your configuration from being overwritten by a future install.
This is the master configuration file used by the AWM client. Use the ISPF change command to change HLQ to your qualifier (hlq). See Master Configuration on z/OS for more information.