Install AGrid Package
Install the AGrid package from AppExchange, and click Get It Now from the application information page.
You will be redirected to a page, where you can select which Salesforce Org to install in.
You can select your Production or Sandbox Salesforce Org on this page and confirm the Org before hitting “Confirm and Install”.
Choose "Install for Admins Only"
Click “Install” or "Upgrade" if you are upgrading from an earlier version.
Once installed on your Org, AGrid will appear under the Installed Packages section.