Concatination of two different libraries

Hi,
we can concatenate two different libraries using “*STEPLIB”. But how can i give new library name through steplib, for example i need to concatenate two libraries. The one which i am currently working “LIB1” and i need to access “LIB2”. please explain with the help of one example.

If you want to add STEPLIBs from a program, this can be done with subprograms USR1025N, USR3025N or USR4025N, but usually these are set within Natural Security.

If you want to add STEPLIBs from a program, this can be done with subprograms USR1025N, USR3025N or USR4025N in Library SYSEXT, but usually these are set within Natural Security.