For both the simple and advanced page designer, once you finish all the steps for setting up the page the last step is the Preview/Publish tab. On this tab you will find the customer URL generated by the software that you can share on your website, in emails, or via social media. A QR code is also generated to share and you can download it with the small image icon located to the top left of the code. 

There is also an html embed code available at the bottom of the page if you wish to embed your donation page inside your website frame. Note that when a donation page is embedded into a website, the Apple Pay feature is disabled due to encryption requirements by Apple.