Complex sentence: Mr. Krabs has SpongeBob making Krabby Patties, Mr. Krabs taking the register, and himself doing what he normally does, counting money on one surfboard when he, Squidward and SpongeBob meet up with Patrick and Sandy.
Split into simpler sentences: Mr. Krabs has SpongeBob making Krabby Patties and himself doing what he normally does, counting money. When the trio are on one surfboard Mr. Krabs, Squidward and SpongeBob meet up with Patrick and Sandy.