You can set the following Kafka configuration values in your neo4j.conf, here are the defaults.
neo4j.conf
kafka.zookeeper.connect=localhost:2181 kafka.bootstrap.servers=localhost:9092 kafka.auto.offset.reset=earliest kafka.group.id=neo4j streams.sink.polling.interval=<The time, in milliseconds, spent waiting in poll if data is not available in the buffer. default=Long.MAX_VALUE> streams.sink.topic.cypher.<TOPIC_NAME>=<CYPHER_QUERY> streams.sink.enable=<true/false, default=true>
See the Apache Kafka documentation for details on these settings.