How do I add a Start shopping button to the last welcome slide in my app?

Each welcome slide has an optional button.

1. Go to Settings → App Settings → Welcome Screens.
2. Click Edit on the slide (or Add slide for a new one).
3. Fill in Title (required). You can also add a Subtitle and use Choose image to pick a picture.
4. In Button label, type the text, for example Start shopping.
5. In Button target, enter the app screen or web address it should open, for example Home.
6. Click Update slide (or Add slide).

To make it the last slide, use the ↑ ↓ arrows in the Order column. The new order saves straight away.