How to Transfer Ownership of Google Drive Files (GAT+ and GAT Unlock required)

Step 1:

Select the files you wish to change ownership of (example: documents by specific user). Use specific filter for your needs.

Step 2:

Select the files you would like to transfer ownership and click on Remove permissions.

Then to notify the affected users of the files about to have an ownership change select the ‘File Operations’ dropdown menu and select Remove Permissions.
Once they run the permission changes report while selecting the REPORT ONLY setting.
Step 3:
Select notify ‘Owners’.
You can add a message to the users. When you run the report each affected owner will receive your message, along with a list of the files they own that are affected.
This will make sure no changes happen here.  This entire above step is optional.
Step 4:

Again select the File Operations drop-down. This time select ‘File Management

Here you can add the account that you want to change ownership to.

Step 5:
If you do not want the existing owners to be editors then select ‘Remove other permissions’. This will remove all other access permissions, including readers.
You can “Remove other permissions by selecting the check mark, and remove (old owner from having any access to th file as by default when ownership is changed the Old Owner becomes automatically an Editor of the files)

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