Navigate to the Niche Hunter tab

Click on the "Actions" menu.

Click on the "Google Search Windows To Open" option.

Select one or more options to load multiple Google search windows.

Click on the "Save" button.

Click on the "Actions" menu.

Click on the "Domain Availability TLDs" option.

Click on the TLD list box.

Edit and/or add TLDs you want to include in domain availability searches.

Click on the "Save" button.