@Vaishali1 wrote: Thank you Reeza for your suggestion.  I will sign up the SAS University Edition.   Is there anything in specific I should look at to get the experience I need?   thank your for your help, Vaishali 🙂 Any question posted here is worth looking into. Some will be out of your ballpark, but the rate of those where you can help will increase with every one that challenged your knowledge and skills. Just today I learned some interesting facts about PROC EXPAND, although we don't even use it (no ETS license where I work). Applying Maxim 1 for someone else will do that. ... View more