You will always need to have a location ready when you wish to add new stations to the system. For that, you'll need a pool.
Click on "Stations" menu on the bottom of the page
then, click on "+ Add pool or station" button on the bottom right of the page
A pop up menu will appear on the right side of the page. Click on "Add new pool" button.
A page will open and you need to fill in the details. Once the information needed is filled, click on the "Add new pool" button at the bottom of the page.