Step by step guide to enable Google Docs Offline Sync:
How to Enable Offline Sync in Google Docs
Step 1. Open Google Docs in your browser.
Step 2. Click on Main Menu from the top left corner of the screen.
Step 3. Select ‘Settings’ from the drop-down window, a settings window will appear on the screen.
Step 4. There will be an option named as ‘Offline’ available in it, with a button in front of it. Turn the button on by clicking on it to enable Google drive offline.
Step 5. Press OK and now you’re ready to access Google Docs Offline.