Click on save option to open saved window tree popup.
Tab map support nested window.
you can save unlimited layer of nested windows.
✪ Save in existing folder.
Click on folder's title to select folder.
Then click on Save to saved window.
✪ Create new window space
Click on folder's title in which you want to nest current window.
Then click on New window button.
Click on create button to create window space.
Finally click on Save to saved window.