It does not appear in my drop down menu nor am I able to add it under the App tab in settings.
Many Thanks
Hi Jo-- Not sure what exactly you mean by "add google docs functionality", so here's a list of all the integrations we currently have with Google: http://help.smartsheet.com/articles/863861-smartsheet-integration-with-google.
Hope this helps! If not, let me know a little bit more about what you're looking for