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To find the embed code, go to Settings → Scheduler Rules & Logic:
On this page, look at the right hand side to see the Embed code that you can place on your website. You can customize the width and height of the embed-able scheduler so that it fits the dimensions you want it to on your webpage.
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Once you've got your scheduler on your site, it is time to start directing clients to your scheduler and watching the appointments roll in from website visitors!