Does anyone know how to affect multiple entities at once?

[JacktheFabricRipper]

First off, I don't know any terminology here, sorry. Second, I don't know any of the more technical parts of python, so if my questions seem really stupid, I'm sorry.

Anyhow, question time.

Does anyone know how I would do something where I can change multiple entities at once? For example, for rendering, how can I change if enabled depending on the distance from the player without having to write a 3D distance script and a script that toggles if enabled for each individual entity?

Thanks!!!!

[JacktheFabricRipper]

Ok update. I noticed something in the ursina cheat sheet that I think might help, but I need help understanding it. Does anyone know what script and/or add_script() does/do?