I know this topic is about a year old but can someone chime in on how to do this? I am stuck on the same thing. I can get the doors to all work and synchronized for multiplayer but just using the trigger boxes, but as soon as you try to use a input key only the server can use the door. This topic has been discussed lots of places but no one has posted a clear way to accomplish this, and this should be an easy task to do… I have been working on getting this working for around 6 months, searching and reading all the documentation and nowhere tells you how to for sure do this.
So far the only way I could get this to work with everyone seeing the doors opening and closing was to create my own controller as suggested here in the forums but this just seems just way to much wasted work, if this is the only way to do it then the work wont be wasted. Is that the only way to achieve this or has anyone been able to do this using the default 3rd person template and player controller.