You can create a new document using a copy of an existing document by editing the existing document under a new name.
How to edit a document under a new name:
Launch the Drive app.
Open a folder containing documents, in the folder tree.
Note: Open a folder for which you have the permission to create objects.
Click on a document in the display area. In the pop-up, click the . Select . The document will be opened for editing.
Click on
on the upper right side of the document bar. Enter a name for the document.You can now use the functions for editing a text document.