فعال کردن ۴ خروجی توسط ۴ پسورد به واسطه کیپد

Welcome to the Arduino Community

I am an Iranian
My name is Mehran.
I'm not fluent in English
And with Google's Translated help.

I have an order in this way.
In a building that has 4 units with a lift and want to use a password for that unit instead of using the floor chassis to prevent other people from sharing their units.
In this way, each unit has its own separate password and it is also possible to change each password by the person.

Similar to the project, they already performed in the Internet world.
The difference is that it only controls one output while I need 4 outputs.
I went so badly with the code but I did not succeed. I wrote 4 passwords, but I could not change my password !!!

I worked on this project that failed.
Thank you for your guide.

I want this broufer but with 4 outputs and separate ones
https://create.arduino.cc/projecthub/diy-hacking/arduino-keyless-door-lock-system-with-keypad-and-lcd-bcad2e?ref=search&ref_id=keypad&offset=12