First, create a Pixieset Code Snippets widget on Common Ninja.
On the widgets catalog, find the Code Snippets and enter the Editor.
When you're done creating the Code Snippets widget, click on the Save Changes button at the right top corner of the editor.
If you don't have an account on Common Ninja, you'll have to register first.
When you're ready to add the Code Snippets widget to your Pixieset website, click the Add To Website button at the top bar of the Editor.
On the window that opens, click the Copy Icon to copy the widget embed code. In the next steps, you will paste this code into your Pixieset website.
Now, let's head to the Pixieset website's editor.
On the Pixieset editor, click the Add Block button where you wish to add the Code Snippets.
Enter the Others tab on the left panel.
Click the Custom Embed Code on the blocks list.
Click the Edit Code button, on the new block you've added to the page.
Now, in the Embed Code window on the left panel, simply paste the widget embed code you've copied before.
Toggle the Save Preview button on, so you'll see the Code Snippets's content in the editor.