How to add a Disclaimer Message when logging into Employee Center?

Hello.

We have just started using Employee Center and are looking to provide enhancements.  One of those enhancements is a disclaimer message regarding electronic security and data privacy.  It's a rather long message and we would like to put it in whenever a user logs onto Employee Center.

1) Where would I store this message in our settings for Employee Center?

2) Client is a multinational corporation and thus requires messages in English, Spanish, German, and Italian.  Where can we store these versions of this disclaimer?

Thanks