Excel conditional formatting based on another changeable cell value

Hi i have been asked , how to setup conditional formatting based on another two cell value which are changeable. for more information please see the attachment sheet..https://docs.google.com/spreadsheets/d/17-TeE7XfaYWYQofdO720Wlfwd8LoO8vDWLjZ96iZTMc/edit#gid=0  

Thanks in advance for any help, advice or clarification