Setting hive properties in Amazon EMR?

I'm trying to run a Hive query using Amazon EMR, and am trying to get Apache Tez to work with it too, which from what I understand requires setting the hive.execution.engine property to tez according to the hive site?

I get that hive properties can be set with set hive.{...} usually, or in the hive-site.xml, but I don't know how either of those interact with / are possible to do in Amazon EMR.

So: is there a way to set Hive Configuration Properties in Amazon EMR, and if so, how?

Thanks!