In order to setup Google Tag Manager tags for Hotjar, we'll need to have a Hotjar Site ID

Option 1: Look at the URL of Your Browser while You're Logged into Hotjar

It'll look something like this: http://insights.hotjar.com/sites/**[SITE_ID]**/dashboard.

Example: 1111111

Option 2: Navigate to your Sites & Organizations Settings

1. Select Settings

2. Select Sites & Organizations

3. Here you'll see a listing of Sites & Organizations you have access to. Their Site IDs will be in the "ID" column.