Replicate Player Actor Movement (Ball)

Hi guys,

i do not use character movement component, so i have to do the replication of my actors movement manually.
i have watched the livestream about Networking, but my problem was not mentioned(?).
right now i am using add force to move a ball around on the xy plane. i could also use set linear velocity, if that is necessary.

i have simply no idea what to do. i know i should tell the server about the position and Rotation frequently, but the players movement should be also done locally?! i have no idea. im sorry.

can u give me a hint?

thank you!