Before starting a backup, you need to install the Keepit app in G Suite. The Keepit app is available through the G Suite Marketplace.
1. Go to Apps and Add Marketplace apps.
You can find the Marketplace by clicking the front page. Click Apps, then click the plus icon (Add Marketplace apps).
2. Enter Keepit in the search box.
3. Click the Install button, then follow the install guide.
Note: To commence the backup, it is necessary to use an Administrator account that has access to all data across all accounts.