Looping in multiplayer

Hello everyone !

I’m currently developping a multiplayer game using only blueprints. It’s a 2D game, with flipbook animations. I already read the network compendium created by Cedric ‘eXi’ Neukirchen but I can’t find the solution to my problem. Because I don’t want to bother you with a ton of blueprints, I’m going to ask you specific questions. thank you very much to anyone who will try to answer it.

-Do i have to create the ennemies (AI) only on the server or with multicast ?
-if I want to update the animation of one of these enemies by stopping the animation loop or reactivating it, do I have to do it on server, on multicast, on owning client or without replication ?

I must clarify that all enemies are set to replicated (and all their animations and sprites)