APAMA and Terracotta BIGMEMORY Max integration

I am trying to push some data from apama to BigMemory Max. Once apama is running the ehcache.xml default configuration is shown in Terracotta Management console. I see data is going to terracotta, and tmc shows client connected and tables visible. But no search results from BigMemory SQL query, and no connectivity to presto for accessing the cache.

Please help to understand the process.
The documentation talks about ehcache.xml but where exactly to place the file in apama, is not clear.