CloudExtend allows you to view the Gmail and Google Drive sub tab on virtually all NetSuite record types, including custom. Ask your NetSuite Admin to follow these steps in order to enable the Gmail/GDrive subtab for your desired records.
Navigate to Customization->Scripting->Scripts->List
Search for “Celigo Gmail Google Drive Sub Tab". Click ‘View’ next to the script and then click on the Deployments tab. Here you will see a list of record types the script is already deployed to.
To deploy the Google Drive tab to new record types, including custom, click the 'Deploy Script' tab at the top left and then:
(1) Choose the record type to deploy it to
(2) Select the audience desired
(3) Click Save
Note: You need to have a valid GDrive license for the Gdrive subtab to appear on your NetSuite interface.