How do I stop outlined fonts in Indesign

I have a customer, requesting a print ready version of their artwork. But they have now come back asking for the fonts to be un-pathed [not outlined].

From what I've read on various forums, it appears that Indesign exports by 'default', fonts outlined in pdfs.

Is there any way I can change the default, and produce a pdf with live text [not outlined]?  Where is the default setting located??