Tabs can be separated to create new windows and you can combine tabs from different windows into one window. To use this feature, you must turn off the 'Use single-process mode for better performance' in [Options > Advanced].

To Detach a Tab and Create a New Window:

Select the tab you want to detach with the mouse.
Drag the tab and drop it outside of the Xshell Window.

To Detach and Tab and Add it to an Existing Window:

Select the tab from an Xshell Window.
Drag the tab and drop it into a tab group of an existing Xshell Window.

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