If you wish to leave an update, sign in to your profile, and under How is your day? there is a field for you to enter your update. You also can update your status. You have three options to choose from: Good, Bad and So/So. If you like, you can send your update to your Facebook page by checking the share on Facebook box. When you are done leaving your update, click post update.
If you have any questions about this feature, please feel free to contact Support here.