Settings → Windows

A grid with one row per window — Maps, Discord, Spell Timers, DPS Meter, Mob Info, Console, Trigger Editor, Macro Editor — and three columns:

Column	What it does
On top	Keep the window above the game (what makes an overlay an overlay). Applies on Save.
Opacity	Window transparency — previews live as you drag the slider.
Click-through	Clicks pass straight through to the game. Great for HUD-style overlays; remember you'll need to come back here to turn it off, since you can no longer click the window. Applies on Save.

The Discord row has an extra Discord background opacity slider, which controls the overlay's backdrop separately from the window itself.

Plugin windows

If you run add-ons, any window they open gets its own row too, below a Plugin windows separator and labelled <add-on name> — <window title>. They carry On top and Opacity and work exactly like the built-in rows — nothing extra to install, and nothing the add-on's author had to do.

They have no Click-through box, deliberately: a click-through window can't be clicked, and unlike Maps and Discord an add-on window has no menu bar to reach for once it stops responding.

Two things worth knowing:

• Only add-ons that actually opened a window this session get a row. One you disabled, one that errored on load, one you uninstalled — none of them appear. Their saved opacity isn't discarded, it just sits in your settings until the add-on comes back. Because nothing hot-loads, an add-on you enabled a moment ago only shows up here after the restart that starts it (Settings → Plugins).
• An add-on can only offer a row for a window it built on the nParse+ overlay base. Most do, since that is what the SDK hands them. One that builds a plain Qt widget instead still opens from the tray, but nParse+ has no opacity or on-top state to give you for it.

Window positions aren't set here — drag the windows themselves, and use tray → Window Layouts to save named position presets (Windows & Overlays).