How to make an opening door in Roblox Studio

If anyone know the ROBLOX game Doors, im trying to remake it in unity as a side project, but i cant figure out how to make the procedurally generated rooms like in

How do I fix this code to trigger an event for approaching a door? - Scripting Support - Developer Forum

My door won't open help me out - Scripting Support - Developer Forum

How do I make a door open only for one person?[Solved] - Scripting Support - Developer Forum

How to open a door on key - Scripting Support - Developer Forum

ROBLOX Scripting, Make an admin door, Only certain players can go through the door

How to make a key to open a door local? - Scripting Support - Developer Forum

Advice on how to properly script a swinging door realistically, using CFrames - Scripting Support - Developer Forum

Making GUI pop up for door when player is near the door

Door that kills player when closed not functioning - Scripting