BackOffice>>Tools>>Contacts
Within contacts, you can set-up your internal people or depertments who stores visiotors can then direct messages to when they select the contact tab in the header (default Prestashop theme).
When you go to BackOffice>>Tools>>Contacts, you will be present with the following screen.

You will now have a list of the contacts you have created. You can edit or delete any of these as needed
Click "Add new"

Title: Enter the name that your uses will choose from the contact form, for example "customer service"
Email address: enter the email address, in our example enter the email address to send emails to customer service
Description: Enter a bried description (This will be displayed on the contact form to the visitor)
Save the form
Whn a visitor clicks the contact tab in the header (default theme) they will now see this form.

They can now choose Customer service from the drop down. Once chosen the description text that you entered above will be displayed directly below the "Subject" and above the email address the user will enter