Dont know how to loop npc pathfinding

[sick ferry]

https://www.youtube.com/watch?v=tjwI4b2ZRZk This is the tutorial i used, first screen shot is variables, second is targeting system, third is pathfinding system from the tutorial. I was wondering how to loop the pathfinding to the object without stuttering. and after that i would like to figure out how to make the npc follow the targeted player.
also im a beginner and not very good at coding so i might need things spelled out.

[sick ferry]

anyone?

[frank raptor]

** You are now Level 2! **

[sick ferry]

bump

[sick ferry]

Bump

[scenic rose]

add a case for when the humanoid reaches the final waypoint

tutorials are meant to show you how something works, not what code to copy+paste

you learned nothing from the tutorial