Quote from Bernoulli:
Create a directory here:
C:\Program Files\eSignal\Formulas
and drop the file in there. It will then be accessible via the Formulas menu item.
The VWAP efs also uses an additional library (amStudies.efsLib, I think). That goes here:
C:\Program Files\eSignal\FunctionLibrary
Quote from Bernoulli:
Here's the link you're looking for:
http://share.esignal.com/groupcontents.jsp?folder=Formulas-Libraries&groupid=10