From what I can gather, Shewart is part of the SAS/QC package. I can't find much info out about this, but from this paper:
http://www2.sas.com/proceedings/sugi28/009-28.pdf
Seems to imply that it is part of EG. You can check what is installed by running the code:
proc setinit;
run;
The log should show what components are installed. Or follow this thread:
https://communities.sas.com/t5/SAS-Procedures/How-to-get-the-licensed-package-list-on-installed-SAS/...
To see other options. SAS/ACCESs is to do with access to and from other applications such as DB's, Office etc. Is this another question?