> For the complete documentation index, see [llms.txt](https://docs.timeinpixels.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.timeinpixels.com/nobe-omniscope/features/secondary-window.md).

# Secondary Window

Secondary Window lets you spread OmniScope scopes across two displays.

<figure><img src="/files/YeFZxhLCRR3Xe7mTkUvk" alt=""><figcaption><p>OmniScope with a secondary window on a second display</p></figcaption></figure>

## Current Scope

The current implementation is focused on **macOS** and supports two native windows:

* Main Window
* Secondary Window

## Requirements

* Two connected displays
* Multi-monitor support enabled in Preferences
* App restart after enabling multi-monitor support

## Open and Close the Secondary Window

Use the macOS menu:

* **Window > Open Secondary Window**
* **Window > Close Secondary Window**

The app remembers the secondary window position and whether it was open.

## Assign Scopes to a Window

Use a scope tab menu (hamburger) and select:

* **Window > Main Window**
* **Window > Secondary Window**

When the secondary window is closed, scopes assigned to it are hidden. Reopening restores them.

## Adding New Scopes to the Secondary Window

To add new scopes directly in the secondary window, **right-click any empty space** in the window and select a scope from the **Scope** context menu.

<figure><img src="/files/tY0UQB2glh1yOhhlbbx3" alt=""><figcaption><p>Right-click empty space to add a scope to the secondary window</p></figcaption></figure>

This works when the window is empty or when there is available space between or around existing scopes.

<figure><img src="/files/86FZPYrFg6rjoaUkCiEQ" alt=""><figcaption><p>Adding a scope when other scopes are already present</p></figcaption></figure>

{% hint style="info" %}
If all scopes are docked to fill the entire window, there is no empty space to right-click. To add more scopes, first remove or resize an existing scope to create empty space, then right-click to add the new scope and dock it back into the layout.
{% endhint %}

## Layouts

Saved layouts include both windows and scope placement. If only one display is available, scopes are arranged on the active display.

## Full Screen

**View → Full Screen** (or the keyboard shortcut) toggles full screen on both the main and secondary windows simultaneously on macOS and Windows. Each window enters full screen on its own display.

## Current Limitations

* No drag-and-drop of scope tabs between OS windows
* Two-window setup only
* Secondary window uses a UI-only render path

## Troubleshooting

### Secondary window opens on the wrong monitor

Move it manually once; the position is persisted.

### Secondary window opens with no scopes

Assign one or more scopes to **Secondary Window** from each scope menu.

### Menu item is missing

Enable multi-monitor support in Preferences and restart OmniScope.

## Related

* [Layouts](/nobe-omniscope/layouts.md)
* [Scopes Overview](/nobe-omniscope/scopes.md)