Enabling Third-Party Apps for Google Drive

To use Pear Deck with a Google Apps for Education domain, Pear Deck requires that the domain allow third-party apps to be installed on Google Drive (which is enabled by default in the Google Admin Console) OR that the administrator install Pear Deck from the Google Apps Marketplace.

If your domain currently disallows third-party apps, your Google Apps IT Administrator will need to perform the following steps to re-enable apps:

Enable third-party Google Drive apps:

  1. Sign in to the Google Admin console.
  2. Click Apps > Google Apps > Drive > Data Access.
  3. If you have the Google Apps Unlimited, Education, or Nonprofits edition, select the desired organizational unit (learn about Google Apps editions.) Otherwise, your settings apply to your entire organization.
  4. Check Allow users to install Google Drive apps. This setting affects only third-party apps from the Chrome web store. If you don't check this option, apps from Google (such as Docs, Drive, Slides, Forms, and Drawings) will remain available to users in your domain.
  5. Click Save Changes.


An alternate method...

Google Apps Marketplace applications can be installed by administrators. You can therefore whitelist Pear Deck for your organization by disabling the option above for your users, then deploying specific Marketplace apps (like Pear Deck) as the administrator.

Original Source: https://support.google.com/a/answer/6105699?hl=en