Can I split-screen Minecraft with a friend and invite a third player online at the same time?

Myself and a friend would love to play Minecraft on ps4 with her sister. She and her sister would have to play with splitscreen and I would play on the map online. Unfortunately we didn't manage that, if someone knows if and how it works, I would be happy to receive an answer.

It's easy she and her sister need 2 ps4 acc and you all need ps +. Man can save if 1 ps + has the other I pack another link in hope it helps