First time Setup:
Step 1: Navigate to "https://remotedesktop.google.com/support"
Step 2: Left Click "Download Icon"
Step 3: Left Click "Accept & Install"
Step 4: Left Click "Yes"
Step 5: Left Click "Yes"
Step 6: Left Click "Got It"
Step 7: Left Click "Generate Code"
Step 8: Left Click "Clipboard Icon"
Step 9: Send us the copied code
*Note*: Access code expires every 5 minutes.