As a Host, you can receive stars from your audiences during the broadcasting. What can you do with those Stars? You can later payout your Stars! To know more about the payout, you can go to 'My page' - 'Star wallet' - 'Payout' on the top of the page.
Please keep in mind that you can use payout once a week and have to have at least 5,000 stars to be eligible for it. Please check out the rest of the guidelines in the "Payout guide" from My page - Star wallet.