1. Navigate to Inventory > Inventory Management
2. Select your product(s) that you would like to turn off auto sync for
3. From the blue 'Sync Actions' menu choose 'Turn Off Auto-Sync'.
If you would like to turn off the auto sync inventory feature for your company as a whole, navigate to Settings > Inventory Settings > Inventory. Un-check the checkbox for 'Auto Sync Inventory'. This will turn off all syncing features for your account.