In the settings tab, at the bottom of the page, you will find the button
'Integrate with my site' that will take you to the integration assistant.
For ibookfishing PRO sites, here are two method for integration: simple and advanced (FREE sites can only use some parts of the simple method). The simple method generates HTML code to be inserted on one or more pages of your websites. This allows your users to search for available resources, to initiate the booking process, or to see the availability calendar. The advanced method lets you embed a complete reservation system on your website without requiring the users to ever go to the ibookfishing.com website.