Once a position of interest is located, you can select that position and contact the employer regarding that job posting.
To get started, click on the position in question from the Position list.
You will see an envelop icon in the upper left corner (beside the employer's name).
Click this envelope icon to message the school.
This selection opens the Messages section of your application. (Communications that occur to and from employers will be located in the "Messages" section of your account.)
From here, you can write your message and click Send to contact the employer.