Grab an opponent

Hi, I am trying to design a mechanic where one character can grab another character in game to catch them, and a bar with fill up until they are caught, how do i go about doing this. Any help would be appreciated.

I don't know exactly what you are trying to do. But if one player (A) is running trying to escape and the other (B) is trying to catch him I would make it that when B press a given Key, if A is inside X radius from B it will slow A's run Speed while loading the "catch progress bar". If A leaves the "catch radius", his speed goes back to normal and the progress bar resets to 0

Additionally you could animate B's arms with the new IK Anchors to show like it's grabing A