Attach a File
2. Enter your message and choose an option to attach a file to the message.
2.1. To attach a file from your computer, click the Upload icon.
The file is not added to Drive. Other users get the file directly in the message.
2.2. To attach a Drive file, click the Google Drive icon.
When you send the file, you'll be warned if the room or someone in a direct message doesn't have access. If you have Edit access to the file, you'll see an option to grant access. If you grant access to a Space, it also applies to people who join the Space later. If people leave the Space, they lose access to the file unless they’re given access individually or through another group.