Add Activation: Build Your Own section to a Site Page. This section is required

Add this section to the page below the Activation: Build Your Own section and right above the section you want to create an "in page" link for.

Go into the Achor Links settings and update the Hyperlink Anchor ID setting to be an id that you will use in a step below. Be sure to not include any spaces as they will be replaced by dashes. ex: call-to-action

Copy the current page link to your clipboard by clicking on the page link icon (this is not the same link that you see in your browser as a Site Admin)

Edit another section on the page that is using a link or a button. Choose the Custom Url option and then paste the page link into the setting.

Move your cursor to the end of the line for the page url that you just pasted and add #your-anchor-id ex: https://www.mydomain.com/pages/sales-page#call-to-action