Github user benoyantony commented on the issue: https://github.com/apache/zeppelin/pull/1623 thanks @1ambda , Sorry for the delay. 1. If this feature is merged, then the properties can be referred in the interpreter properties. Each user can override the property value. 2. Once the feature is merged, I will have another pull request on the Livy Interpreter which make use of the feature for its properties. I have tested this feature at our company. Attached is screenshot where the administrator setup the Livy property - livy.spark.yarn.queue to ${queue,defaultQueue}  In the second screenshot, the user override the queue as benoyqueue. If the user does not override, then the property will remain as defaultQueue. 
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