How should the new CTV guidelines for head and neck be applied to the post-op setting?

For example: In the setting where the primary site has been removed with wide margins, such as larynx or tongue Whether or not PNI or LVI is present Coverage of the flap http://www.thegreenjournal.com/article/S0167-8140(17)32656-7/fulltext?elsca1=etoc&elsca2=email&elsca3=0167-8140_201801_126_1_&elsca4=Radiation%20Oncology