Alexa opening doors

where is the SPECIFIC info on how to set a password for Alexa to open a door lock? Thanks!

Secure Commands access will automatically be prompted when you enable the Alarm.com Skill.

If you already have the Alarm.com Skill enabled, you would just need to go into the Alexa App, Click the Menu, then Skills and Games, and search for “Alarm.com

Tap the skill named just “Alarm.com” and disable. Wait a minute, then re-enable. Upon enabling the Alarm.com Skill (NOT the Alarm.com Smart Home Skill) you will be asked if you want to enable secure actions and set a pin code.

So, for example if you set a pin of 1234:

This pin can be said along with the command:
Say, “Alexa, ask Alarm.com to disarm with 1-2-3-4”
Say, “Alexa, tell Alarm.com to unlock the door with 1-2-3-4”
Say, “Alexa, tell Alarm.com to open the garage door with 1-2-3-4”

It can also be said after a follow-up prompt by Alexa:
Say, “Alexa, ask Alarm.com to disarm.”
Alexa will respond: “What is your pin?”
Say, “1-2-3-4”