The GarbleCloud application has many options for working with both Normal Folders and Secure Folders across Cloud Accounts. Files from Dropbox account can also be secured in the same secured folder where the Google Drive files are secured. This allows you to centralize your information from multiple Cloud Accounts.
How to Move Multiple Secure Files from Multiple Cloud Accounts
Drag and drop the Dropbox file to the desired secure folder.
A pop-up window will appear requesting to enter your GarbleCloud Passphrase. Enter your passphrase and click on the OK button.
Your secured file can be seen in the secured folder along with other Google Drive Files.