First you will need to create a record set that returns the list of the emails of the people in the office. Then in Universal Email, you could use the BCC tab, which allows you to send a BCC email, and select record set loop. this will send the email to the office list in a separate email.
To save the form in a database, you will need to use an Insert Server Behavior which is included in DataAssist. This will allow you to insert data to your database when the form is submitted.