Limit which external file repositories the team can use and adjust Google Docs share settings. You can allow users to upload files from Box, Dropbox, Google Drive, Local Storage (computers), YouTube, and/or OneDrive.
For files attached from Google Drive, you can also choose:
Not to share Google Docs automatically.
To automatically share files with users with access to the task.
To automatically share files with users from the same domain.
Click your profile image in the workspace's upper right-hand corner.
Select Settings from the drop-down.
Click Security in the left panel.
Use the checkboxes and radio buttons under the File storage heading to adjust security settings.
Click Save changes.