You can use Code Blocks to add the Invite Client Widget to a page, blog post, sidebar, or footer.
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Step 1 - Add the Code Block to the page
Open a page or post editor.
Click an Insert Point or the +.
Select Code from the menu.
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Step 2 - Add code
Ensure that HTML is selected in the drop-down menu.
Then copy and paste the widget code (from: https://designfiles.co/settings/widget) into the code field on Squarespace.
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Step 3 - Save
Click the Apply button to publish your changes.