In Squarespace, you will need to locate a code widget and drag it into your site where you'd like to see the menu live. Once installed, this is where the code from your customization dashboard will go. Here's a short instructional clip from the Squarespace team:
Step 1 - Add the Code Block
- Open a page or post editor.
- Click an Insert Point or the +.
- Select Code from the menu.
- For more detailed steps, visit Adding blocks
Step 2 - Add code
If you're displaying content with the Code Block, ensure that HTML is selected in the drop-down menu.
Then enter or paste the code into the box and remove the <p>Hello, World!</p> placeholder.
Step 3 - Save
Click Apply to publish your changes.