How to set the diameter for each object individually

My project has big zombies and small zombies, if the diameter of pathfinder is turned up, small zombies will have problems, if the diameter of pathfinder is small, big zombies will have problems, How do I set the diameter for each zombie individually?

Hi

Take a look at this tutorial: https://arongranberg.com/astar/docs/multipleagenttypes.html