Expand upsells by default on the booking engine
Follow the steps below to enable this feature on your booking engine:
Click Booking Engine.
On the left side panel hover over Upsells.
Click Upsell Group List.
Click the edit button on the package you want to expand which is to the right of the screen.
Click on the Extra tab.
Tick the box Expand this group by default under the settings title.
Click save changes.