Hi Mcubes,
You don’t need a host file in AWX as everything can be managed from UI itself and if you’re planning to add ansible_ssh_pass then add it in Variables text box of the required host.
Also, refer the below link to import an existing Inventory into AWX.
https://docs.ansible.com/ansible-tower/latest/html/administration/tower-manage.html#inventory-import
Note: This forum is only to discuss Ansible/AWX and if you have queries regarding Red Hat Ansible Tower then kindly reach out to Red Hat Support.
Regards,
Ompragash