Phone Presence Device - Very Inconsistent

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One more thing - this is the thread that got me started. It probably describes the process better.

How do I setup presence using Homekit and Homebridge?

After reading many, many posts on here, I have decided to ask the question in hopes of getting a complete and simplified way to setup presence using homebridge. I have homebridge installed and I have installed the new homebridge Maker Api plugin. But I am completely not getting it when it comes to how I setup presence in homekit and link it to homebridge, etc. and have various geolocations, etc. Also, how do I have multiple presence on homekit? Can anybody help with this?