We use a programming framework inside Unreal4 game engine to build cues organizing position of cameras and avatars. As on a physical stage, we have basically to set up the blocking of avatars in a 3D scenery and program camera views on the scenic situation.
We use a similar method as in theater by building events, step by step, using what we call cues :
We set extras (that are fixed skeletal meshes) in the digital space for setting location of the avatars (view from backstage) :
We can also set differents cameras to get different views of the digital space :
Here are two avatars moving along their extra location starting points :