By default, cas libraries will not be shown. First you will need to set up a cas session.
cas;
(this line creates a cas session named casauto.) Also note that the standard selected cas-library is casuser. You can change this with options and or parameters
The CAS libraries are not yet displayed.
Use the following code to assign all available cas - libraries
caslib _all_ assign;
this line assignes all available cas - libraries

After that, you can load data into cas with proc casutil.