You can send a message to the JAG office, the assessment team and your team by using the message tab on your assessment.
Log into the JAG website and then go to 'My JAG' and Assessment dashboard:
Go into your assessment dashboard by clicking 'Click to access this assessment'
You should then see all of the tabs at the top of the page as below:
Click into the messages tab, where you will be able to add a new message or reply to other messages there.