How to setting splunk an architecture of 01 heavy forwarder, 01 search head and 01 indexer?

Hi guys! How to setting splunk an architecture of 01 heavy forwarder, 01 search head and 01 indexer? I need to collect Windows events, firewalls and Cisco routers in an environment with heavy forwarder 01, 01 and 01 head search indexer. How would the configuration of each? Please help.