Playing characters animation

Hi guys. Need some help from you. So the idea is to make one character interact with another, i mean for example when i click on another player character - my character start walking to him, and when he reaches target, they both start playing shake hands animation if front of each other. Any ideas, lessons, tips?

attempt №2. Here is the original thread Animation between characters (shaking hands) - Character & Animation - Unreal Engine Forums. Couldnt find the answer instead of 2 bones ik. But how implement it?