Ansible Roles Documentation in Satellite 6.4

Issue

I'm having trouble finding documentation on running Ansible roles in Satellite 6.4. Do you have to create your own ansible hosts file under /etc/ansible/hosts? Also, how do you specify the user and private key it should use when running a playbook? I have remote execution setup successfully for SSH commands, but I'm not finding a lot of documentation on setting up the Ansible portion in 6.4. Any guidance would be greatly appreciated.