1. Create or customise a Giveaway in LiveReacting.
2. Open created Giveaway project and click on Settings (Gear Icon).
3. Activate the plugin and copy the URL.
4. Open your XSplit Studio, click Add Source button at the bottom, and choose Webpage. Enter the copied URL and press OK. The layer with Giveaway will be invisible, and the Giveaway won't start until you launch it in LiveReacting Studio.
5. Finally, make sure to launch your stream in XSplit first, and then start the giveaway it in the LiveReacting Studio.