Postman authentication issues

 I am trying Postman to get an access token. I got 404 error. Here is what I am doing. 

I am using this url - https://api.icims.com/v1/oauth/token

I tried using Parameters, which was audience, grant_type, client_id and client_secret, then when that did not work I tried them in form_urlencode and that did not work either. I ma missing something or script I need to get the token in Postman