How can I spawn an ai/npc at a certain point?

I want to spawn an ai/npc at a certain point, how would I do so? I know nothing about ai/npc's so please help me.

why dont u put the npc in the workspace, and while it's in the workspace put it in the spot where u want it to spawn at, and then put that npc in replicatedstorage.

then when u wanna spawn it just create a script that creates a function which creates the event where the npc will thus spawn on the player's input