Step 1 - Log into your Google Apps Dashboard and click Verify Domain
Step 2 - You'll most likely see a Recommended Method or Alternate Method tab near the top of the page. You'll want to look under both tabs to find information about adding a meta tag to your site's homepage. Clover has a feature that makes this step really easy to do. Select Add a Meta Tag to Your Site's Homepage. Copy the meta tag code they give you from Google Apps.
Step 3 - Open a new tab and sign in to your Greenhouse Dashboard
Step 4 - Go to Site Settings and then Google Domain Verification.
Step 5 - Paste the meta tag code you copied from Google Apps into the box in the dashboard and click the Save Changes button
Step 6 - Go back to your Google Apps tab and click Verify at the bottom. This will notify Google that you have placed the meta tag in the correct location.
It can take up to 24 hours for Google to verify.