Alright, I'll give it another try 😀
Let's assume you referred a dude, who is start posting content on HIVE. He makes a selfie and get's upvotes. After 7 days the post rewards will be payed out, where you would automatically receive a 3% of those rewards.

Remember that those new accounts start with 0 HIVE POWER, so it would be a good idea to delegate a tiny amount of HP, so the referred user has a smooth starting experience.

Right know there is no HIVE interface (like peakd.com, hive.blog or 3speak.online) which supports the rewards sharing - but I'am pretty confident that this will change anytime soon.