Hi Ted,
I've never added a pharmacy but there is an "add pharmacy option" but it looks like it only searches for the pharmacy (maybe you can find it on this screen and not on the pharmacy search screen?)
Log in as ADMINISTRATOR. Then go to "set e-Rx". Then click "Account administration" in the lower right. In the next screen select "admin", the "Location Pharmacy List" then "add pharmacy". From there you can search.