Migrate the "BasicMeleeCombatSystem" folder to your project
Add the Basic Melee and the Animation Sync components to your character
Add the I_Components interface to your character
Add the components references to the interface "Get" function (check the video)
Add the system's skeleton to the "Compatible Skeletons" of your skeleton
Add the Basic Melee Linked Anim Graph to the animation blueprint of your character
(Optional) Expose the variables that you need ( mainly speed )
Add a BP_AIDirector to your level
Add a navmesh bounds Volume to your level
Video Showing the the process using the ALS (Advanced Locomotion System) as example
https://drive.google.com/file/d/14h8bmDa5WqOgNqpS275LmjeuD1QZh-_u/view?usp=sharing