I make a video with someone. We have a donation QR or lnurl-address dedicated for those donations. When someone zaps us, it automatically splits the donations to the % we agrees to our own personal wallets.

Another example, but much more complicated. I manufacture products and I hire a graphic designer. I get 80% designer gets 20% for that product only on my website. When a customer buys that product SKU, it automatically sends the 20% of the sale to graphic designer.