I was reading the thread with the list of all the List off all the apps but I cannot figure out how to add them. All i see is Recommended apps in my iOS device.
My main goal is to find and use a Vacation Lighting app to randomize the lights around my home for security.
there is also a GitHub that I have successfully added but I don’t know how to implement it.
The thread with the list of apps is two years old and has “deprecated“ in the title which means that those options are no longer available. A lot has changed in that time.
If you can describe a little more about what you want to do, someone should be able to help you set it up with the current automations. 
If you are running WebCore this piston exists --> https://community.webcore.co/t/away-at-night-light-randomizer-v0-1/10278
Working great for me!
i’ve actually switched over to using Alexa Guard for this.