Excellent! Thanks for pointing me into the right direction!
For all those who are still wondering, here’s how you do it.
1. Write your article.
2. Hit “Save Draft”
3. Click “View Article” and open it in a new tab/window.
4. Give out the rating.
5. Switch back to the tab where you were editing your article.
6. In the “GD Star Rating”-menu to the right side, click on “Post Star Ratings”
7. Set that to “Locked”
8. Hit “Publish”
And the best thing? It takes you about three seconds.