Ok, I think you aren't creating the index pattern. But I assume you indexed the data into elasticsearch.
Once data is indexed, you must follow these steps.
-> Go to the management tab (the last tab at the end of left side menu) and choose Index pattern in the kibana tab.
-> In the index pattern, click on the create index pattern tab and add the name of the index you used while indexing the data into elasticsearch.
-> It should automatically detect the time/date pattern and provide you the mapping info as well.
-> Now, go to creating the single metric job and you should be able the see the name of the data index, you should select one.
-> Now, you should see the fields for functions other than Count.
Let me know if it didn't work.