How to Update Your Contact Information in the Campus Directory 1. Navigate to the Mt. SAC homepage at www.mtsac.edu and click the Directory link from the top toolbar. 2. Click the Edit My Info link from the top of the Directory toolbar. 3. You will be prompted to login. Use your Mt. SAC portal credentials (ex. jmountie). 4. You can now change your contact information by editing the available fields. Click Save once your finished. Updates may take up to 24 hours to be reflected in the Campus Directory.If you would like to edit profile information click the blue links on the left side that correspond to the information you would like to change.