In the background

`LogiPluginService…`Logi plug-in service

● Safe to close

Runs Logitech’s add-ons for its devices and app.

What it is

Part of Logi Options+. It hosts add-ons such as app-specific button settings.

If you close it

Logitech add-ons stop until Logi Options+ starts it again.

● Safe to close. An app you can quit with ⌘Q. Save your work first if it asks.

… means any name that starts this way.

From Procession’s guide, in the words the app shows.