Adnan, i am afraid ETABS is not a very good solution for masonry walls design. Etabs is designed as a frame analysis program. I have used a software called MASS(http://www.masonryan...ralsystems.com/) It design masonry as per Canadian Building Code. Your best bet would be to get a masonry design handbook and see examples to get a feel of how to design it, or if you want to try doing it on a software, look for educational version one. Can you update a bit about what do u plan to do? may be I can help you develop a spreadsheet to design what you want to..