Animation between 2 characters

So i’m going to try to make a simple 2d game (my first) and i don’t know if the UE4 is worth downloading. I wanna make animations that use multiple characters, so my question is if there is something in this engine like a trigger that triggers the characters to use one animation made for them? I know you can animate one character within the engine without using other programs, but i can’t find info about making such thing. Maybe it’s too obvious that you can do that, or maybe you just can’t?