This was exactly the answer I was looking for right now, thank you @DiG3 !
Thanks for posting this question to the Forums, @AxelCapek. 
I had the exact same question today, and three weeks after you asked it I was able to easily find the answer here. This is a perfect example of why the Forums are so important as an archive of community knowledge. 
I’d love to upvote this post but it looks like we don’t have the functionality rn! We can only upvote posts in Issues/Bugs and Feedback. I’ll ask for one in Forums Feedback.
Edit: I requested upvoting in a Feedback post, if anyone wants to upvote my feedback about upvotes. 
https://forums.unrealengine.com/t/request-please-add-upvoting-feature-to-all-topics-not-just-issues-bugs-and-feedback/731375
Edit again: @Flak just added the ability to upvote posts in all categories so I upvoted this post! Thanks, Flak!