You can resend an invitation to an already granted share.
How to resend an invitation to a person:
In the folder view, select a folder that you shared.
Click theicon next to the folder name. Click on .
In the Drive app, you can also click the icon in the toolbar. Click on .
The window for adjusting the permissions opens.
Click theicon next to a user name. Click on in the menu.
Parent topic: Sharing Data