You can embed the enquiries URL directly into your website so that any enquiries made this way will feed directly into eyMan.
For a single link for multiple branches, use the link on the company details page in System Settings, or for an individual branch link, use the unique link for each branch on the branch details page in System Settings.
Alternatively, you can choose to build an API into your website. For more information on this, see the Enquiries API for Developers guide.