Click open in the MS office program like MS excel or MS Word or any other Ms office programs.
Navigate and locate the file that you want to open
Click the arrow next to the open button
You will see the list of menu as seen below
Click open as copy
Ms office will automatically create a copy of the file and will open the file that you need as a copy.
This will create a copy of the file in the same folder.
You can also Open files in read only mode by clicking Open Read-Only
If you have any questions or suggestions, please post a comment