Relate 360 needs to be installed only on one node(which is usually recommended to be installed on edge node).
Once installed, when you run the Relate 360 jobs, we submit jobs to yarn so as long as from edge node hadoop services are accessible, it should be fine.
Supported version as per 10 Hf9 relate 360 PAM is EMR 5.14.
Regarding architecure, depending on data volume, you can have hadoop cluster of your requirement. Minimum service needed for Relate 360 jobs to run is zookeeper, yarn, hive, hbase, hadoop.
Please let me know if you are looking for anything more.