Magento Embed Code Instructions
Step 1. Log in to Magento Admin. Go to System / Configuration and select General / Design.
Step 2. Select Footer and paste Zotabox code in the Miscellaneous HTML field.
magento_embed_code
Magento 2: Go to Stores > Configuration > General > Design > Footer > Miscellaneous HTML
Step 3. Click SAVE CONFIG at the top right and REFRESH your website to active the code.