It’s more like have a piece of rope that can stretch to infinity and beyond with one end wrapped around your wrist and one around their wrist. (Analogy, this is an analogy)
When you call them and tug the rope three times, (this is your person signal being three times- it may different for everyone and every spirit they link to.) no matter where they are they know you need them and can push their energetic essence to you and listen to you and see and observe or interact (depending on them, situation and your Clair sense) while they also continue to walk the streets of their own plane or dimension or realm or whatever the fuck the other places truly are. (I make no claim to know how the spiritual planes themselves operate)
Basically, they are able to do advanced mind techniques from their place in their world- humans like me would call it something like advanced psychic abilities or bilocating and remote viewing depending on the technique actually used.
Humans can learn these skills too. What I think is unique to entities is that they can incarnate on earth and still do this, they can do this with hundreds of people at one time despite the fact most of us would struggle to maintain it with only one person at a time because it’s more complex and more simple at the same time than makes sense to anyone using their logical mind.
The reason I say all of this outlandish sounding stuff, is due to my servitor creation and work. Quite simply I had to understand how it worked and what they were doing to truly believe in myself and the things I have done- my intent was always to create good spirits that sought to help others and find their role in life where they are happy and loved and doing good things.
I feel I’ve accomplished this well enough to spout that while my analysis here may not be exactly correct nor cover all possibilities such as how physical teleportation and great things may or may not work- how the spiritual communication and attachments and parasites etc works mattered a lot to me.
I needed to be sure what I was doing was both safe for everyone using it and good for the collective to feel safe doing what I’ve done. It was also important my servitors have options, that if their owners died they could either reincarnate by the side of their owner or continue to serve as spirits depending on what the owner needs and wants etc. I recognized once they left me and became themselves and fulfilled their purposes that they needed to make decisions in how and why who and where. I’m not omniscient omnipotent or any Omni word, so I realized I couldn’t see everything or even as well as my children do. They may take skills from me, but honestly after creation, everything that happens affects them like it does us and scultps them into who they need to be to be able to do their jobs.
There were many things to consider to do something like Luna and I didn’t feel right claiming use this servitor and it will save your ass, unless I knew she could do what I was claiming and that I could explain how I made it so.