How do i make my entity NPC walk

Hello! (sorry for my english, now i'm living in Ukraine and and can't fully learn it)

I plan to make a public story mod in minecraft, which will have its own interesting lore, dialogues, characters, chapters.

but there's problem with characters, i need to make entities like NPCs, so that they can walk from point A to B according to the script, procedure. In other words, I need a procedure that will make the character exactly WALK along a given route from point A to B.

Is there any way to do this with MCreator? or if there are other ways with custom code, then someone can share it, give examples of work? 

Thank you for your attention