Paste the snippet
Site-wide, or on a single page.
Project Settings → Custom Code → Footer Code
Copy your snippet
In your SiteMind dashboard, open Widget Studio and copy the embed code. It is one script tag with your widget key in it.
Open Custom Code
Go to Project Settings → Custom Code.
Paste into Footer Code
Paste the snippet into the Footer Code field to add it site-wide, or open a single page's settings and use its own Custom Code section if you only want it on one page.
Save and publish
Click Save, then Publish your site. Custom code only takes effect after a fresh publish, not just saving.