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Google Drive allows you to share files with others, allowing them access to those files within their own Google Drive. When the file being shared was created using a native Google app such as Docs or Slides, sharing will also allow users to work on them simultaneously with other people with access to the file.
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To share a file stored on your Google Drive, click on the file. Then click the Share icon
You can share your document with other people by entering their e-mail addresses in the blank. Then select the permissions that you’d like to give them for the document:
- Can edit--can view and edit the document, by default, they can also share the document with others.
- Can comment--can view the document and create comments, but not edit the text
- Can view--can view but not edit the document
This location also displays a list of users who have access to the file. Here, you can change the access available to people currently given access to the file by clicking on the dropdown menu next to their name. You can also remove a person's access to the document by selecting "Remove access".
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You can also share a document that you’re currently editing. To do so, just click on the Share button. This will open the same windows seen when sharing a file from the outside.
How does folder sharing work?
You can share entire folders the same way that you share documents. Either click the folder and click the “Share” button 
All subfolders and documents within the folder will be shared with the exact permissions that you give the folder. When you create a new document in the folder, it will have the same permissions as the rest of the folder. You can change those permissions by editing individual files’ or subfolders’ permissions.
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Google Drive allows for you to edit a document simultaneously with another person. If you are editing at the same time, you will see the other person’s cursor and the changes that they make instantly. The only limitation is that when using this utility in Google Sheets, you aren’t able to edit the same cell of a spreadsheet as another person at the same time. You can also chat with your co-editor by using the window on the side.
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