Hi Steffanie,
You are correct, there is no "select arbitrary waveform.vi" from Agilent.
There is an Arbitrary Waveform Setup vi which offers 5 built-in setups.
I checked the examples from Agilent. They did not use a "select arbitrary waveform.vi".
Does one of your libraries call this vi?
I'll attach the vi (in case you don't have it).
-JLV-