You can create N-Matrix/Variations Dimensions in Bulk using Excel. To do so, follow the instructions below:
1.Navigate to the Settings tab, and once there locate and Select N-Matrix option.
2. Select Download Template link on the page, to Download an Excel Template with pre-defined columns headers.
3.Locate and open the Downloaded Template and fill in the desired Values (Note: Manufacturer,ProductType columns are not necessary to fill out)
4. When you complete filling out the Downloaded Template, go back to the N-matrix Dimensions Page and select the button Choose File and then Import Dimensions
6. And now you're Done. Locate your new Dimensions in the Grid Below.