Add Shortcuts to Create Files on the Windows 10 Context Menu

Use the Registry Editor. 

LibreOffice Writer (.odt)

Go to: Computer\HKEY_CLASSES_ROOT\.odt\LibreOffice.WriterDocument.1\ShellNew

(Default) REG_SZ (value not set)

FileName RED_DZ C:\Program Files\LibreOffice\share\template\shellnew\soffice.odt