Setting up multiple ILM policies on a filebeat with multiple indices as its output

I've been trying to set up ILM policies on a filebeat which has a module enabled for additional data source to process. So, I'll need to apply two different policies to two different indexes on the same filebeat.

ILM policy names:

  1. filebeat-7.4.2 >> this is the native one used by default by a filebeat.

  2. vpc_flow-policy >> a custom policy for flow logs.

    filebeat.inputs:
    - type: log
      enabled: true
      paths:
        - /var/log/commands.log
    
    filebeat.config.modules:
      path: /etc/filebeat/modules.d/*.yml
      reload.enabled: false
    
    setup.template.settings:
      index.number_of_shards: 1
      index.number_of_replicas: 1
      index.codec: best_compression
    
    tags: ["flow_logs"]
    
    output.elasticsearch:
      indices:
        - index: "vpc_flow-%{+yyyy.MM.dd}"
          when.contains:
            event.type: "flow"
    
    processors:
        - add_host_metadata:
           netinfo.enabled: true
        - add_cloud_metadata: ~
    
    xpack.monitoring.enabled: true
    

Where should I add ILM configurations which would only apply to vpc_flow-* indexes and not filebeat-* ones? I already created ILM in Kibana.

--Thanks