Question about character creation systems

I am wondering how most character creation systems are set up on Roblox.

Are aspects such as camera, character positioning before everything is loaded, etc. usually advanced or simple?

What do you mean by this?

Advanced or simple in terms of their set-up process. For example, if the camera is set on the player’s character model after its loaded in and the player’s model is teleported to a predetermined position in the game’s world.

Those terms are subjective. It doesn’t really matter.

Often the character model isn’t even used and a custom model is used instead. And setting up things like the camera and character location are needed to have a character create.

I still don’t really understand your question. Break down every aspect of it - short sentences with an effectively meaningless example don’t help.