How do you change all tables so they display in Fahrenheit and not Celsius

I want to display ALL tables in Fahrenheit not Celsius in VCM editor but cant find where you do this. I have searched threads. Some say go to charts , cant find this. Some say right click and change units but units is greyed out. Version 3.6.System of units is metric. Any help appreciated.

***** Update. Whoops figured it out. I assumed that changing to imperial would change things like grams to pounds etc. Changed to imperial. Senior moment.