We have a number of Google Apps users, each of them has a non-public spreadsheet named 'XData' in their GDrive account. The Google Apps admin needs to be able to do the following:
- Click one button that would collect specified data from users' spreadsheets and put it into a master spreadsheet on admin's account.
- Click another button that would display the data from master spreadsheet to admin in a nice visual way.
What's the best way to implement such setup using Google tools (Fusion Tables and/or Admin SDK and/or Apps Script and/or Drive SDK and/or Spreadsheets API and/or etc)? The first step is optional if the second one can be accomplished without it.